Phương pháp giải nhanh trắc nghiêm hóa học Phần 1

7/29/2019 Phng php gii nhanh trc nghim ha hc Phn 1

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Phan: 1PHNG PHAP GIAI NHANH

E TRAC NGHIEM MON HOA HOC

I. MT S K NNG CN THIT KHI GII TRC NGHIM Ti hin kin thc, hiu r c th gii cc cu hi trc nghim khch quan mc bit. Xu chui cc kin thc hc lm tt cc bi tp vn dng mc c bn. Phn tch, so snh, tng hp lm cc bi ton vn dng mc cao. S dng cc cng cng tan hc, cc qui tc tnh nhanh gii cc bi tp. Phi hp cc thao tc cc k nng hp l gii bi ton trong thi gian ngn nht

II. PHNG PHP GII NHANH TRC NGHIM HA HC1. Mc bit:

tr li cc cu hi thuc mc ny, i hi hc sinh mt h thng kin thc c trang b y, hiu r kin thc c bn trong chng trnh tr li.V d:Cu 1: Trong phng th nghim, ngi ta thng iu ch HNO3 t:

A. NH3 v O2.B. NaNO2 v H2SO4 c.

C. NaNO3 v H2SO4 c.D. NaNO3 v HCl c.

Cu 2: Thnh phn chnh ca phn bn nitrophotka l:A. NH4H2PO4, KNO3.B. (NH4)2HPO4, NH4H2PO4.

C. (NH4)2HPO4, KNO3D. A, B, C u sai.

Trong 2 v d trn, hc sinh cn bit cc kin thc trn mi tr li c v vy cn nm vng kinthc trong sch gio khoa Ha hc lp 10, 11, 12.

MT S V D P DNGCu 1: Mnh khng ng l:

A. CH3CH2COOCH=CH2 cng dy ng ng vi CH2=CHCOOCH3.B. CH3CH2COOCH=CH2 tc dng vi dung dch NaOH thu c anehit v mui.C. CH3CH2COOCH=CH2 tc dng c vi dung dch Br2.D. CH3CH2COOCH=CH2 c th trng hp to polime.

Cu 2: chng minh trong phn t ca glucoz c nhiu nhm hiroxyl, ngi ta cho dung dchglucoz phn ng vi:

A. kim loi Na.B. AgNO3 trong dung dch NH3, un nng.C. Cu(OH)2 trong NaOH, un nng.D. Cu(OH)2 nhit thng.

Cu 3: Mt trong nhng im khc nhau ca protit so vi lipit v glucoz lprotit lun cha chc hiroxyl.protit lun l cht hu c no.

protit lun cha nit.protit c khi lng phn t ln hn.

Cu 4: Dy gm cc cht c dng tng hp cao su Buna-S l:A. CH2=CH-CH=CH2, lu hunh.B. CH2=CH-CH=CH2, C6H5CH=CH2.C. CH2=C(CH3)-CH=CH2, C6H5CH=CH2.D. CH2=CH-CH=CH2, CH3-CH=CH2.

Cu 5: Nilon6,6 l mt loi:

A. t axetat.B. t poliamit. C. polieste.D. t visco.Cu 6: Phn t ng saccaroz c cu to t:

A. 2 phn t -glucopiranoz bng lin kt 1,4 gliczit

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mailto:[email protected]:[email protected]


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B. 1 phn t -fructofuranz v 1 phn t -glucopiranoz bng lin kt 1,2 gliczitC. 1 phn t -glucopiranz v mt phn t -fructofuranoz bng lin kt 1,4 glicozitD. 2 phn t -glucopiranoz bng lin kt 1,6 gliczit

Cu 7: Hai khong vt chnh ca photpho l:A. photphorit v apatit.B. Photphorit v photphat.

C. apatit v cacnalit.D. photphat v photphua.

Cu 8: Khi t chy NH3 trong kh clo, khi trng sinh ra chnh l:A. N2. B. NH4Cl. C. HCl. D. NCl3.

Cu 9: nhn bit ion nitrat ta dng hn hp Cu v:A. H2SO4.B. HNO3.

C. H3PO4.D. NaNO3.

Cu 10: Khi i t tr sang phi trong mt chu k, bn knh nguyn t ca mt nguyn t:A. tng dn do s Z tng dn nn n ng khng gian ca cc electron gim.B. gim dn do lc ht tnh in gia v electron v ht nhn tng dn.C. tng t kim loi n kim, ri gim t kim n phi kim.D. khng bin i tun hon.

2. Mc hiu v p dng:Dng 1: Da vo s proton, ntron, electron xc nh nguyn t, n cht, hp cht.

V d 1: Nguyn t nguyn t X c tng s proton, ntron, electron l 52. Bit X l mt ng v bn.Vy X l:

A. Cl. B. S. C. Ar. D. P.Hng dn:Bi lm chi tit:Theo ta c: PX + NX + EX = 52 => 2PX + NX = 52. Do X l ng v bn nn ta c:PX NX 1,52PX => PX 52 2PX 1,52PX => 3PX 52 3,52PX => 14,8 PX 17,3Do PX nguyn dng nn: PX = 15, 16, 17 u l nhng nguyn t thuc chu k 3, hn na v X lng v bn nn PX 52 2PX 1,2PX => 16,3 PX 17,3 => PX = 17. X l 17Cl35 Clo

Nhn xt:Nu nm r phng php ny ta c th gii nhanh: 52 : 3,5 PX 52 : 3 v suy ra X chu k 3.p dng: 52 : 3,2 PX 52 : 3 tm nhanh X(*)

Mt cch gn ng, do 2PX + NX = 52 nn c th tnh P trung bnh xc nh X thuc chu k no.T p dng: PX NX 1,52PX hay PX NX 1,2PX

Dng 2: Xc nh nhanh Cng thc phn t, Cng thc n gin Kin thc cn nm vng.

t chy a mol hp cht hu c A (C, O, N) thu c x mol CO2, y mol H2O v z mol N2.

S nguyn t C = =2CO

A

n

n

x

a; S nguyn t H = =2

H O

A

2n

n

2y

a; S nguyn t N = =2

N

A

2n

n

2z

a.

T l C/H = =2

2

CO

H O

n2n

x2y

; T l C/N = =2

2

CO

N

n2n

x2z

; T l H/N =2

2

H O

N

n x=n y

.

Cc v d minh ha mc ph thng:Cu 1: un nng hn hp 2 ru n chc A, B c s nguyn t C gp i nhau vi 1 axit to ramt hn hp este trong c este E. E khng tc dng vi Na. t chy 1 mol E cn 5 mol oxi , tora 5 mol CO2 v 4 mol H2O. 2 ru trn l :

. CH3OH v C2H5OH.

. C2H5OH v C4H9OH.C. CH3OH v C3H7OH.D. C4H9OH v C2H5OH.

Hng dnTrong E, S C = 5, S H = 8. Axit t nht c 2 C.

S nguyn t Cacbon trong hai ru phi l 1 v 2. Chn p n A.Cu 2: t chy hon ton mt amin n chc cha no c mt lin kt pi mch cacbon ta thuc CO2 v H2O theo t l mol

2 2H O COn : n 9: 8= . Vy cng thc phn t ca amin l:

A. C3H6N B. C4H9N C. C4H8N D. C3H7N



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Hng dnT l C/H = 8/18 = 4/9. Chn p n B.Cu 3: t chy mt 1 mol ru A thu c 4 mol H2O. A l:

. CH3OH.C2H4(OH)2.

C. C3H5OH.D. C3H6(OH)2.

Hng dn:Ch S nguyn t H = 2nH2O/nHCHC. p n. D.

Mc i hc:Cu 1: Hn hp E gm 3 este a chc ca axit oxalic v hai ru n chc, no, mch h, ng ngk tip. Thc hin phn ng x phng ha hon ton 4,8 gam hn hp E bng dung dch xt va th thy dng ht 19,48 ml dung dch NaOH 11% (c khi lng ring 1,12 g/ml). Cng thc cahai ru to nn hn hp E l:

A. CH3OH, C2H5OH.B. C4H9OH, C5H11OH.

C. C5H11OH, C6H13OH.D. C2H5OH, C3H7OH.

Cu 2: Hp cht A l mt aminoaxit mch khng nhnh. Cho 0,01 mol A tc dng va vi80 ml dung dch HCl 0,125M, sau em c cn thu c 1,835 gam mui. Mt khc, trung ha2,94 gam A bng mt lng va dung dch NaOH, sau khi c cn sn phm th thu c 3,82gam mui. CTCT ca A l:

A. HOOCCH2CH(NH2)COOHB. CH3OCOCH2CH(NH2)COOH

C. H2NCH2CH2CH(NH2)COOHD. HOOCCH2CH2CH(NH2)COOH

Dng 3: p dng h thng c s l thuyt gii mt s cu trc nghim.i vi dng ny, cn nm r s lin h gia cc n cht, hp cht v c, hu c, hiiu r vai tr cccht tham gia phn ng v nm c ch phn ng, bn cht ca tng cht trong phn ng. Vn dng linhhot kin thc ha hc.

Cu 1: Khi cho Cu tc dng vi dung dch cha H2SO4 long v NaNO3, vai tr ca NaNO3 trongphn ng l:

A. cht xc tc.B. cht kh.

C. cht oxi ho.D. mi trng.

Cu 2: Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau. Chohn hp X vo H2O (d), un nng, dung dch thu c cha

A. NaCl, NaOH, BaCl2.B. NaCl.

C. NaCl, NaOH.D. NaCl, NaHCO3, NH4Cl, BaCl2.

Cu 3: Trong cc dung dch: HNO3, NaCl, Na2SO4, Ca(OH)2, KHSO4, Mg(NO3)2, dy gm cc chtu tc dng c vi dung dch Ba(HCO3)2 l:

A. HNO3, NaCl, Na2SO4.B. HNO3, Ca(OH)2, KHSO4, Na2SO4.C. NaCl, Na2SO4, Ca(OH)2.D. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2.

Cu 4: Cho tng cht: Fe, FeO, Fe(OH)2, Fe(OH)3, Fe3O4, Fe2O3, Fe(NO3)2, Fe(NO3)3, FeSO4,

Fe2(SO4)3, FeCO3 ln lt phn ng vi HNO3 c, nng. S phn ng thuc loi phn ng oxi ho -kh l:A. 8. B. 5. C. 7. D. 6.

Cu 5: Tng h s cn bng ca phn ng: Au + NaCN + H2O + O2 Na[Au(CN)2] + NaOH l:A. 25. B. 41. C. 23. D. 16.

Dng 4: S dng cc phng php bo ton: Khi lng, in tch, s mol electron, s khi, s Z,...y l mt trong nhng phng php chnh gii cc bi ton ha hc. Khi p dng phng php ny,cn p dng tng hp cc nh lut, quy tc: nh lut bo ton khi lng. Bo ton s mol nguyn t. Qui tc tng gim khi lng. nh lut bo ton s mol electron Cc bi ton quy v 100 Cc quy tc bin lun i vi bi ton c cht d, bi ton tnh hiu sut.



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S DNG NH LUT BO TON S MOL ELECTRONKin thc cn nmTrong cc h oxi ha kh: Tng s mol electron cht kh cho = tng s mol electron cht oxi ha nhn.a. Kim loi tc dng vi HNO3 (to sn phm kh N+x):S mol electron trao i gp bao nhiu ln s mol in tch ca anion to mui th s mol ca anion tomui gp by nhiu ln s mol ca N+x

nNO3-

to mui = nNO2 + 3nNO + 8nN2O + 10nN2.n HNO3 phn ng = 2nNO2 + 4nNO + 10nN2O + 12nN2.m mui = m kim loi + m gc nitrat to mui.

b. Kim loi tc dng vi H2SO4 (to sn phm kh l S+x)S mol electron trao i gp bao nhiu ln s mol in tch ca anion to mui th s mol ca anion tomui gp by nhiu lns mol ca S+x.

n SO42- to mui = n SO2 + 3 nS + 4 nH2S.n H2SO4 phn ng = 2 nSO2 + 4 nS + 5 nH2S.

Qui tc chung:S mol electron trao i gp bao nhiu ln s mol in tch ca anion to mui th smol ca anion to mui gp by nhiu ln s mol ca cht c s oxi ha +x

S DNG QUY TC TNG GIM KHI LNGV d 1: ( tuyn sinh khi B 2009)

Nhng mt thanh st nng 100 gam vo 100 ml dung dch hn hp gm Cu(NO3)2 0,2M v AgNO3 0,2M.Sau mt thi gian ly thanh kim loi ra, ra sch lm kh cn c 101,72 gam (gi thit cc kim loi tothnh u bm ht vo thanh st). Khi lng st phn ng l:

A. 1,40 gam. B. 2,16 gam. C. 0,84 gam. D. 1,72 gam.Hng dn:Bi gii chi tit: Do kh nng oxi ha ca Ag+ > Cu2+ nn khi cho Fe vo hn hp dung dch trn thAg+ b Fe kh trc n ht th Cu2+ mi b kh.

Fe + 2Ag+ Fe2+ + 2Ag (1)a 2a a 2aFe + Cu2+ Fe2+ + Cu (2)

b b b bNu Fe thiu v Ag+ d (khng xy ra (2)) th:

Fe2+ + Ag+ Fe3+ + Ag (3)Nhn thy: mthanh st tng ln = mAg sinh ra + mCu sinh ra mFe phn ngDo nFe =100 : 56 l d nhiu so vi Ag+ v Cu2+ nn xy ra (1), (2)Vy 108.2a + 64b (56a + 56b) = 101,72 100 = 1,72 gam

Nu khng xy ra (2) th a = 0,01075 mol => 2a = 0,0215 > 0,02 (s mol AgNO3) v lVy xy ra (2) nn b = 0,015 mol => mFe phn ng = 0,025.56 = 1,40 gam (p n A)Nhn xt:Nu theo cc thao tc trn th s khng thi gian cho mt cu trc nghim l 148 v vy

cn p dng phng php tng gim khi lng:mthanh st tng ln = mAg sinh ra + mCu sinh ra mFe phn ng=> (108.2 56)a + (64 56)b = 1,72 vi a = 0,02 : 2 = 0,01 => b = 0,015 => mFe phn ng = 1,40 gam.

V d 2:Ngm mt thanh st c khi lng m gam vo V ml dung dch CuSO4 1,5M, sau khi phn ngxy ra hon ton em cn thy khi lng thanh st nng m + 1,2 gam gm 2 kim loi. Bit kim loi

bm hon ton vo thanh st. Gi tr ca V l:A. 0,1. B. 100. C. 150. D. 0,15.Hng dn:m = 1,2 gam = (64 56)nFe phn ng = 8 nFe phn ng => nFe phn ng = 0,15 mol=> V = 0,15 : 1,5 = 0,1 lit = 100 ml => phng n B

BI TP MINH HOCu 1: Ha tan m gam hn hp X gm Fe v Cu trong dung dch HNO3, kt thc phn ng thu c 0,1mol NO v 0,15 mol NO2. S mol HNO3 c tham gia phn ng l:



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A. 0,3 mol. B. 0,4 mol. C. 0,7 mol. D. 0,35 mol.Hng dnDa vo mi quan h gia s mol HNO3 phn ng vi s electron trao i v s nguyn t Nit trongsn phm kh ta c:n HNO3 = 4n NO + 2 n NO2 = 0,7 mol. p n: C.Cu 2: Ha tan hon tan 2,52 gam hn hp Mg v Al bng dung dch HCl thu c 2,688 lt kh

(ktc). Cng lng hn hp ny nu ha tan hon ton bng H 2SO4 c, nng thu c 0,04 mol mtsn phm duy nht cha S. Sn phm kh l:A. SO3. B. H2S. C. SO2. D. S

Hng dnDng mi quan h: ne kim loi nhng = H+ nhn = ne S+6 nhn.0,04 (6-x) = 0,24 => x = 0. Sn phm kh l S. p n D.Cu 3: Ha tan han tan 12 gam hn hp Fe v Cu (s mol hai kim loi bng nhau) bng dung dchHNO3 d thu c V lt (ktc) hn hp X (gm hai kh NO v NO2) v dung dch Y ch cha hai muiv axit d. T khi hi ca X i vi H2 bng 19. Gi tr ca V lA. 3,36. B. 2,24. C. 4,48. D. 5,60.Hng dn

Dng nh lut bo ton s mol electron.3nFe + 2nCu = 3 nNO + 2 nNO2. M = 19 nn hai kh c s mol bng nhau. p n. D.Cu 4: Trn m gam Al vi hn hp CuO v Fe2O3 ri tin hnh phn ng nhit nhm, sau mt thigian c hn hp cht rn A. Ha tan ht a trong dung dch HNO3 thu c 0,03 mol NO2 v 0,02 mol

NO. Gi tr ca m l:A. 0,27 gam. B. 0,54 gam. C. 0,81 gam. D. 1,08 gam.Hng dnCh : trong h ny Al l cht kh, HNO3 l cht oxi ha.Dng nh lut bo ton s mol electron: 3nAl = nNO2 + 3 nNO. Tm ra m = 0,81 gam. p n C.Cu 5: Ha tan 5,04 gam hn hp 3 kim loi X, Y, Z c ha tr khng i trong 100 ml dung dchHNO3 xM thu c m gam mui, 0,02 mol NO2 v 0,005 mol N2O. Gi tr ca x v m ln lt lA. 0,9 M v 8,76 gam.B. 0,45 m v 8,72 gam.

C. 0,9M v 7,82 gam.D. 0,5 M v 2,78 gam.

Hng dnn HNO3 = 0,02.2 + 0,005.10 = 0,09 mol. X = 0,9M.m = 5,04 + (0,02 + 0,005.8)62 = 8,76 gam. p n A

P DNG TNG HP CC PHNG PHP

Cu 1: Ha tan 2,29 gam hn hp hai kim loi Ba v Na vo nc c dung dch A v 6,72 lt kh(ktc). Thm t t dung dch FeCl3 vo dung dch A cho n d. Lc kt ta, ra sch, sy kh v nung

n khi lng khng i c m gam cht rn. Gi tr ca m lA. 1,6 gam. B. 3,2 gam. C. 4,8 gam. D. 6,4 gam.Hng dnDa vo mi quan h v s mol gia Fe2O3, Fe(OH)3, OH- v H2 d dng suy ra:S mol Fe2O3 = 1/3 nH2 = 0,01 mol. M = 1,6 gam.p n A.Cu 2: Ha tan hon ton 2,81 gam hn hp Fe2O3, MgO v ZnO trong 500 ml dung dch H 2SO4 0,1 Mva . Sau phn ng c cn dung dch, khi lng mui khan thu c lA. 4,81 gam. B. 5,81 gam. C. 3,81 gam. D. 6,81 gam.Hng dnCh : nO2- = nSO42- M = 2,81 + (96 - 18).0,05 = 6,81 gam. p n D.

Cu 3: Nung 13,4 gam hn hp 2 mui cacbonat ca 2 kim loi ha tr 2, thu c 6,8 gam cht rn vkh X. Lng kh X sinh ra cho hp th vo 75 ml dung dch NaOH 1M, khi lng mui khan thuc sau phn ng l (cho H = 1, C = 12, O = 16, Na = 23)A. 4,2 gam. B. 5,8 gam. C. 6,3 gam. D. 6,5 gam.



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Hng dnDng nh lut bo ton khi lng tm ra s mol ca CO2 = 0,15 mol.Lp t l nNaOH / nCO2 suy ra phn ng ch to mui axit.nNaHCO3 = 0,075 mol. m = 6,3 gam. p n C.Cu 4: Cho 1,67 gam hn hp gm hai kim loi 2 chu k lin tip thuc nhm IIA (phn nhm chnhnhm II) tc dng ht vi dung dch HCl (d), thot ra 0,672 lt kh H2 ( ktc). Hai kim loi l

A. Mg v Ca. B. Ca v Sr. C. Be v Mg. D. Sr v Ba.Hng dnDng phng php t cng thc trung bnh. n H2 = n Kl = 0,03 mol. M= 1,67/0,03 = 55,67.Hai kim loi l Ca v Sr. p n B.Cu 5: t chy hon ton m gam hn hp X gm CH4, C2H4 v C2H2 thu c 35,2 gam CO2 v 25,2gam H2O. Gi tr ca m lA. 1,24 gam. B. 12,4 gam. C. 2,48 gam. D. 24,8 gam.Hng dn:S dng phng php bo ton nguyn t:mX = 12mCO2/44 + 2mH2O/18 = 12,4 gam. p n B.Cu 6: trung ha ht 10,6 gam axit cacboxilic A cn dng va V ml dung dch NaOH 1M. C

cn dung dch sau phn ng thu c 15 gam cht rn. Gi tr ca V lA. 100 ml. B. 200 ml. C. 300ml. D. 400 ml.Hng dn:S dng phng php tng gim khi lng:1 mol R(COOH)x phn ng vi x mol NaOH to ra 1 mol R(COONa)x khi lng cht rn tng 22x ga mol R(COOH)x phn ng vi ax mol NaOH to ra 1 mol R(COONa)x th m cht rn tng 22ax = 4,4 gVy ax = n NaOH = 0,2 mol, V = 200 ml. p n B.Cu 7: t chy a mol andehit no, n chc, mch h thu c 1,12 lt kh (ktc) CO2. Nu cho ton bsn phm chy qua dung dch NaOH d th khi lng bnh tng thm:A. 3,5 gam. B. 3,1 gam. C. 2,5 gam. D. 2,1 gam.Hng dn:Cn ch andehit no n chc khi t chy cho s mol nc bng s mol CO2.Khi lng bnh tng = mCO2 + mH2O = 3,1 gam. p n B.Cu 8:t chy 0,1 mol mt ru no, mch h cn va 5,6 lt O2 (ktc). Cng thc ca ru lA. C2H5OH. B. C2H4(OH)2. C. C3H5(OH)3. D. C3H7OH.Hng dn:Qui tc: nO2/n ru = 2,5 th ru l C2H4(OH)2, nu = 3,5 th ru l C3H5(OH)3. p n B.Cu 9: t chy 0,1 mol hn hp 2 ru no thu c 4,48 lt CO2 (ktc). Dn ton b sn phm chyqua bnh ng KOH rn d th khi lng bnh tng:A. 8,8 gam. B. 5,4 gam. C. 14,2 gam. D. 19,6 gam.Hng dn:

Ch : Khi t chy ru no th s mol nc - s mol CO2 = s mol ru.Khi lng bnh tng = mH2O + mCO2 p s C.Cu 10: m gam axit cacboxilic n chc X tc dng vi NaOH d thu c 1,25m gam mui. X lA. CH3COOH.B. C2H5COOH.

C. C3H7COOH.D. C2H3COOH.

Hng dn:Dng qui tc tng gim khi lng.1 mol axit chuyn thnh mt mol mui khi lng tng 22 gam

Ta c: M =M +22

1,25Suy ra M = 88. p n C.

3. Mc phn tch tng hp v suy lun:i vi mc ny, cn nm vng cc kin thc trong chng trnh ha hc THPT. Trn c s phim rng h thng kin thc v b sung mt s kin thc thuc cc lnh vc khc (Ton, l, sinh) khng phi p dng mt cch my mc cc cng thc ha hc.



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V d: Kt hp Ha hc v vt l tnh vn tc tc thi, vn tc trung bnh ca phn ng, p dng tchphn tnh hiu ng nhit H, nng lng phn ng, ni nng,p dng cc cng thc vt l ht nhn tnh nng lng trong phn ng ht nhn, chu k bn r, s nguyn t cn li ca mt phng xpdng cc l thuyt sinh hc hiu r cu trc cc bc ca protein, cu trc ca ADN, ARN Tt c cckin thc ny cn tng hp mt cch ton din c h thng.Minh ho: ( tuyn sinh i hc khi B 2009)

Cu 1: Cho cht xc tc MnO2 vo 100 ml dung dch H2O2, sau 60 giy thu c 33,6 ml kh O2 ( ktc).Tc trung bnh ca phn ng (tnh theo H2O2) trong 60 giy trn l:A. 5,0.10-4 mol/(l.s).B. 5,0.10-5 mol/(l.s).

C. 1,0.103mol/(l.s).D. 2,5.104mol/(l.s)

Hng dn:nOxi = 1,5.10-3 mol, t = 60s, V = 0,1 litPhn ng: 2H2O2 2H2O + O2

3,0.10-3 mol 1,5.10-3 molVy tnh theo H2O2 th tc trung bnh ca phn ng l:VTB = d(H2O2)/dt = 3.10-3 : 60 = 5.10-5 mol/(0,1lit.s)Do V = 0,1 lit nn: vTB = 5.10-5 : 0,1 = 5,0.10-4 mol/(l.s). p n A

Cu 2:Loi ng cu trc nn phn t ADN l:A. C5H10O4 eoxiribozB. C5H10O5 eoxiriboz

C. C5H10O5 ribozD. C5H10O4 riboz

Hng dnDa vo kin thc ho hc trong bi prtin, axit nuclic (SGK Ha hc 12) v kin thc sinh hc c thchn p n ng l A

Minh ho thi i hcCu 1: (Khi B 2009) Cho cc hp cht hu c:(1) ankan (2) ancol no, n chc, mch h;(3) xicloankan (4) ete no, n chc, mch h;(5) anken (6) ancol khng no (c mt lin kt i C=C), mch h;(7) ankin (8) anehit no, n chc, mch h;(9) axit no, n chc, mch h (10) axit khng no (c mt lin kt i C=C), n chc.Dy gm cc cht khi t chy hon ton u cho s mol CO2 bng s mol H2O l:

A. (1), (3), (5), (6), (8).B. (3), (4), (6), (7), (10).

C. (3), (5), (6), (8), (9).D. (2), (3), (5), (7), (9).

Chn cu ACu 2:(Khi B 2009) Cho s chuyn ho gia cc hp cht ca crom:

TZYXCr(OH) )SOH(FeSOSOHKOH)(ClKOH3424422 ++++++

Cc cht X, Y, Z, T theo th t l:

A. K2CrO4; KCrO2; K2Cr2O7; Cr2(SO4)3.B. KCrO2; K2Cr2O7; K2CrO4; Cr2(SO4)3.C. KCrO2; K2Cr2O7; K2CrO4; CrSO4.D. KCrO2; K2CrO4; K2Cr2O7; Cr2(SO4)3.

Chn cu D

- - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Phan: 2



8/41

E THI TUYEN SINH AI HOC MON HOAHOC

NAM 2007, 2008, 2009

B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2007 CHNH THC Mn thi: HA HC, khi A

( thi ny gm c 5 trang) Thi gian lm bi: 90 pht

M thi 182H v tn th sinh: .............................................................................S bo danh: .......................................................................................

Cho bit khi lng nguyn t (theo vC) ca cc nguyn t: H = 1 ; N = 14 ; O = 16 ; Mg = 24 ; Al = 27S = 32 ; Cl = 35,5 ; K = 39 ; Ca = 40 ; Cr = 52 ; Cu = 64 ; Zn = 65 ; Ag = 108 ; Ba = 137 ; Pb = 207PHN CHUNG CHO TT C CC TH SINH (44 cu, t cu 1 n cu 40)

Cu 1: Cho 4,48 lt hn hp X ( ktc) gm 2 hirocacbon mch h li t t qua bnh cha 1,4 lt dungdch Br2 0,5M. Sau khi phn ng hon ton, s mol Br2 gim i mt na v khi lng bnh tng thm 6,7gam. Cng thc phn t ca 2 hirocacbon l:

A. C2H2 v C4H6. B. C2H2 v C4H8. C. C3H4 v C4H8. D. C2H2 v C3H8.Cu 2: Ho tan hon ton hn hp gm 0,12 mol FeS2 v a mol Cu2S vo axit HNO3 (va ), thu cdung dch X (ch cha hai mui sunfat) v kh duy nht NO. Gi tr ca a l:

A. 0,04. B. 0,075. C. 0,12. D. 0,06.Cu 3:Nh t t cho n d dung dch NaOH vo dung dch AlCl3. Hin tng xy ra l

A. c kt ta keo trng, sau kt ta tan. B. ch c kt ta keo trng.C. c kt ta keo trng v c kh bay ln. D. khng c kt ta, c kh bay ln.

Cu 4: Trong phng th nghim, iu ch mt lng nh kh X tinh khit, ngi ta un nng dung

dch amoni nitrit bo ho. Kh X lA.NO. B.NO2. C.N2O. D.N2.

Cu 5: Dy gm cc ion X+, Y- v nguyn t Z u c cu hnh electron 1s22s22p6 l:A.Na+, Cl-, Ar. B. Li+, F-, Ne. C.Na+, F-, Ne. D. K+, Cl-, Ar.

Cu 6: Mnh khng ng l:A. CH3CH2COOCH=CH2 cng dy ng ng vi CH2=CHCOOCH3.B. CH3CH2COOCH=CH2 tc dng vi dung dch NaOH thu c anehit v mui.C. CH3CH2COOCH=CH2 tc dng c vi dung dch Br2.D. CH3CH2COOCH=CH2 c th trng hp to polime.

Cu 7: Dy cc ion xp theo chiu gim dn tnh oxi ho l (bit trong dy in ha, cp Fe 3+/Fe2+ ngtrc cp Ag+/Ag):

A. Ag+, Cu2+, Fe3+, Fe2+. B. Fe3+, Cu2+, Ag+, Fe2+.C. Ag+, Fe3+, Cu2+, Fe2+. D. Fe3+, Ag+, Cu2+, Fe2+.

Cu 8: Anion X- v cation Y2+ u c cu hnh electron lp ngoi cng l 3s23p6. V tr ca cc nguyn ttrong bng tun hon cc nguyn t ha hc l:

A.X c s th t 17, chu k 4, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 4,nhm IIA (phn nhm chnh nhm II).

B. X c s th t 18, chu k 3, nhm VIA (phn nhm chnh nhm VI); Y c s th t 20, chu k 4,nhm IIA (phn nhm chnh nhm II).

C.X c s th t 17, chu k 3, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 4,nhm IIA (phn nhm chnh nhm II).

D.X c s th t 18, chu k 3, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 3,nhm IIA (phn nhm chnh nhm II).Cu 9: Khi t chy hon ton mt amin n chc X, thu c 8,4 lt kh CO2, 1,4 lt kh N2 (cc th tchkh o ktc) v 10,125 gam H2O. Cng thc phn t ca X l:

A. C3H7N. B. C2H7N. C. C3H9N. D. C4H9N.



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Cu 10: Cho 15,6 gam hn hp hai ancol (ru) n chc, k tip nhau trong dy ng ng tc dng htvi 9,2 gam Na, thu c 24,5 gam cht rn. Hai ancol l:

A. C3H5OH v C4H7OH. B. C2H5OH v C3H7OH.C. C3H7OH v C4H9OH. D. CH3OH v C2H5OH.

Cu 11: Cho t t dung dch cha a mol HCl vo dung dch cha b mol Na 2CO3 ng thi khuy u,thu c V lt kh ( ktc) v dung dch X. Khi cho d nc vi trong vo dung dch X thy c xut hin

kt ta. Biu thc lin h gia V vi a, b l:A. V = 22,4(a - b). B. V = 11,2(a - b). C. V = 11,2(a + b). D. V = 22,4(a + b).Cu 12: Thu phn hon ton 444 gam mt lipit thu c 46 gam glixerol (glixerin) v hai loi axit bo.Hai loi axit bo l:

A. C15H31COOH v C17H35COOH. B. C17H33COOH v C15H31COOH.C. C17H31COOH v C17H33COOH. D. C17H33COOH v C17H35COOH.

Cu 13: Clo ho PVC thu c mt polime cha 63,96% clo v khi lng, trung bnh 1 phn t clophn ng vi k mt xch trong mch PVC. Gi tr ca k l:

A. 3. B. 6. C. 4. D. 5.Cu 14: Ba hirocacbon X, Y, Z k tip nhau trong dy ng ng, trong khi lng phn t Z gpi khi lng phn t X. t chy 0,1 mol cht Y, sn phm kh hp th hon ton vo dung dch

Ca(OH)2 (d), thu c s gam kt ta l:A. 20. B. 40. C. 30. D. 10.

Cu 15: Cho cc phn ng sau:a) FeO + HNO3 (c, nng)

b) FeS + H2SO4 (c, nng) c) Al2O3 + HNO3 (c, nng) d) Cu + dung dch FeCl3 e) CH3CHO + H2

0xt Ni, t C

f) glucoz + AgNO3 (hoc Ag2O) trong dungdch NH3

g) C2H4 + Br2 h) glixerol (glixerin) + Cu(OH)2

Dy gm cc phn ng u thuc loi phn ng oxi ha - kh l:A. a, b, d, e, f, h. B. a, b, d, e, f, g. C. a, b, c, d, e, h. D. a, b, c, d, e, g.

Cu 16: Khi nung hn hp cc cht Fe(NO3)2, Fe(OH)3 v FeCO3 trong khng kh n khi lng khngi, thu c mt cht rn l:A. Fe3O4. B. FeO. C. Fe. D. Fe2O3.

Cu 17: Mt hirocacbon X cng hp vi axit HCl theo t l mol 1:1 to sn phm c thnh phn khilng clo l 45,223%. Cng thc phn t ca X l:

A. C3H6. B. C3H4. C. C2H4. D. C4H8.Cu 18: Cho 6,6 gam mt anehit X n chc, mch h phn ng vi lng d AgNO 3 (hoc Ag2O)trong dung dch NH3, un nng. Lng Ag sinh ra cho phn ng ht vi axit HNO3 long, thot ra 2,24 ltkh NO (sn phm kh duy nht, o ktc). Cng thc cu to thu gn ca X l:

A. CH3CHO. B. HCHO. C. CH3CH2CHO. D. CH2=CHCHO.Cu 19: Ha tan hon ton 12 gam hn hp Fe, Cu (t l mol 1:1) bng axit HNO3, thu c V lt (

ktc) hn hp kh X (gm NO v NO 2) v dung dch Y (ch cha hai mui v axit d). T khi ca X ivi H2 bng 19. Gi tr ca V l:A. 2,24. B. 4,48. C. 5,60. D. 3,36.

Cu 20: Hirat ha 2 anken ch to thnh 2 ancol (ru). Hai anken lA. 2-metylpropen v but-1-en (hoc buten-1). B.propen v but-2-en (hoc buten-2).C. eten v but-2-en (hoc buten-2). D. eten v but-1-en (hoc buten-1).

Cu 21: Trn dung dch cha a mol AlCl3 vi dung dch cha b mol NaOH. thu c kt ta th cnc t l:

A. a : b = 1 : 4. B. a : b < 1 : 4. C. a : b = 1 : 5. D. a : b > 1 : 4.Cu 22: Cho tng cht:, FeO, Fe(OH)2, Fe(OH)3, Fe3O4, Fe2O3, Fe(NO3)2, Fe(NO3)3, FeSO4, Fe2(SO4)3,FeCO3, Fe ln lt phn ng vi HNO3 c, nng. S phn ng thuc loi phn ng oxi ho - kh l:

A. 8. B. 5. C. 7. D. 6.Cu 23: Cho 0,1 mol anehit X tc dng vi lng d AgNO 3 (hoc Ag2O) trong dung dch NH3, unnng thu c 43,2 gam Ag. Hiro ho X thu c Y, bit 0,1 mol Y phn ng va vi 4,6 gam Na.Cng thc cu to thu gn ca X l:



10/41

A. HCHO. B. CH3CHO. C. OHC-CHO. D. CH3CH(OH)CHO.Cu 24: Hp th hon ton 2,688 lt kh CO2 ( ktc) vo 2,5 lt dung dch Ba(OH)2 nng a mol/l, thuc 15,76 gam kt ta. Gi tr ca a l:

A. 0,032. B. 0,048. C. 0,06. D. 0,04.Cu 25: nhn bit ba axit c, ngui: HCl, H2SO4, HNO3 ng ring bit trong ba l b mt nhn, tadng thuc th l:

A. Fe. B. CuO. C. Al. D. Cu.Cu 26: C6H6(Benzen) ZYX axitHCltpdNaOHtFeCl

oo

,),(,),1:1(2 . Hai cht hu c Y, Z ln lt l:A. C6H6(OH)6, C6H6Cl6. B. C6H4(OH)2, C6H4Cl2.C. C6H5OH, C6H5Cl. D. C6H5ONa, C6H5OH.

Cu 27: in phn dung dch CuCl2 vi in cc tr, sau mt thi gian thu c 0,32 gam Cu catt vmt lng kh X ant. Hp th hon ton lng kh X trn vo 200 ml dung dch NaOH ( nhit thng). Sau phn ng, nng NaOH cn li l 0,05M (gi thit th tch dung dch khng thay i).

Nng ban u ca dung dch NaOH l:A. 0,15M. B. 0,2M. C. 0,1M. D. 0,05M.

Cu 28:Nilon6,6 l mt loi:A. t axetat. B. t poliamit. C.polieste. D. t visco.

Cu 29: Pht biu khng ng l:A. Axit axetic phn ng vi dung dch NaOH, ly dung dch mui va to ra cho tc dng vi kh

CO2 li thu c axit axetic.B. Phenol phn ng vi dung dch NaOH, ly mui va to ra cho tc dng vi dung dch HCl li thu

c phenol.C. Anilin phn ng vi dung dch HCl, ly mui va to ra cho tc dng vi dung dch NaOH li thu

c anilin.D. Dung dch natri phenolat phn ng vi kh CO2, ly kt ta va to ra cho tc dng vi dung dch

NaOH li thu c natri phenolat.Cu 30: Tng h s (cc s nguyn, ti gin) ca tt c cc cht trong phng trnh phn ng gia Cu vi

dung dch HNO3 c, nng l:A. 10. B. 11. C. 8. D. 9.Cu 31: -aminoaxit X cha mt nhm -NH2. Cho 10,3 gam X tc dng vi axit HCl (d), thu c13,95 gam mui khan. Cng thc cu to thu gn ca X l:

A. H2NCH2COOH. B. H2NCH2CH2COOH.C. CH3CH2CH(NH2)COOH. D. CH3CH(NH2)COOH.

Cu 32: Ho tan 5,6 gam Fe bng dung dch H2SO4 long (d), thu c dung dch X. Dung dch X phnng va vi V ml dung dch KMnO4 0,5M. Gi tr ca V l:

A. 80. B. 40. C. 20. D. 60.Cu 33: Cho m gam tinh bt ln men thnh ancol (ru) etylic vi hiu sut 81%. Ton b lng CO 2sinh ra c hp th hon ton vo dung dch Ca(OH)2, thu c 550 gam kt ta v dung dch X. un

k dung dch X thu thm c 100 gam kt ta. Gi tr ca m l:A. 550. B. 810. C. 650. D. 750.Cu 34: Cho dy cc cht: Ca(HCO3)2, NH4Cl, (NH4)2CO3, ZnSO4, Al(OH)3, Zn(OH)2. S cht trong dyc tnh cht lng tnh l:

A. 3. B. 5. C. 2. D. 4.Cu 35: X phng ha 8,8 gam etyl axetat bng 200 ml dung dch NaOH 0,2M. Sau khi phn ng xy rahon ton, c cn dung dch thu c cht rn khan c khi lng l:

A. 8,56 gam. B. 3,28 gam. C. 10,4 gam. D. 8,2 gam.Cu 36: Hn hp X gm axit HCOOH v axit CH3COOH (t l mol 1:1). Ly 5,3 gam hn hp X tcdng vi 5,75 gam C2H5OH (c xc tc H2SO4 c) thu c m gam hn hp este (hiu sut ca cc phnng este ho u bng 80%). Gi tr ca m l:

A. 10,12. B. 6,48. C. 8,10. D. 16,20.Cu 37: t chy hon ton a mol axit hu c Y c 2a mol CO2. Mt khc, trung ha a mol Y cnva 2a mol NaOH. Cng thc cu to thu gn ca Y l

A. HOOC-CH2-CH2-COOH. B. C2H5-COOH.



11/41

C. CH3-COOH. D. HOOC-COOH.Cu 38: Cho hn hp X gm hai cht hu c c cng cng thc phn t C 2H7NO2 tc dng va vidung dch NaOH v un nng, thu c dung dch Y v 4,48 lt hn hp Z ( ktc) gm hai kh (u lmxanh giy qu m). T khi hi ca Z i vi H 2 bng 13,75. C cn dung dch Y thu c khi lngmui khan l:

A. 16,5 gam. B. 14,3 gam. C. 8,9 gam. D. 15,7 gam.

Cu 39: Dung dch HCl v dung dch CH3COOH c cng nng mol/l, pH ca hai dung dch tngng l x v y. Quan h gia x v y l (gi thit, c 100 phn t CH 3COOH th c 1 phn t in li)A. y = 100x. B. y = 2x. C. y = x - 2. D. y = x + 2.

Cu 40: Cho m gam hn hp Mg, Al vo 250 ml dung dch X cha hn hp axit HCl 1M v axit H 2SO40,5M, thu c 5,32 lt H2 ( ktc) v dung dch Y (coi th tch dung dch khng i). Dung dch Y c

pH l:A. 1. B. 6. C. 7. D. 2.

Cu 41: Cho lung kh H2 (d) qua hn hp cc oxit CuO, Fe2O3, ZnO, MgO nung nhit cao. Sauphn ng hn hp rn cn li l:

A. Cu, Fe, Zn, MgO. B. Cu, Fe, ZnO, MgO.C. Cu, Fe, Zn, Mg. D. Cu, FeO, ZnO, MgO.

Cu 42: chng minh trong phn t ca glucoz c nhiu nhm hiroxyl, ngi ta cho dung dchglucoz phn ng vi:

A. kim loi Na. B. AgNO3 (hoc Ag2O)/ NH3, un nng.C. Cu(OH)2 trong NaOH, un nng. D. Cu(OH)2 nhit thng.

Cu 43: Trong phng th nghim, ngi ta thng iu ch clo bng cch:A. in phn nng chy NaCl.B. cho dung dch HCl c tc dng vi MnO2, un nng.C. in phn dung dch NaCl c mng ngn.D. cho F2 y Cl2 ra khi dung dch NaCl.

Cu 44: Khi tch nc t mt cht X c cng thc phn t C 4H10O to thnh ba anken l ng phn canhau (tnh c ng phn hnh hc). Cng thc cu to thu gn ca X l:

A. (CH3)3COH. B. CH3OCH2CH2CH3.C. CH3CH(OH)CH2CH3. D. CH3CH(CH3)CH2OH.

PHN RING: Th sinh ch c chn lm 1 trong 2 phn (Phn I hoc Phn II)Phn I. Theo chng trnh KHNG phn ban (6 cu, t cu 45 n cu 50):Cu 45: Ho tan hon ton 2,81 gam hn hp gm Fe2O3, MgO, ZnO trong 500 ml axit H2SO4 0,1M (va). Sau phn ng, hn hp mui sunfat khan thu c khi c cn dung dch c khi lng l:

A. 6,81 gam. B. 4,81 gam. C. 3,81 gam. D. 5,81 gam.Cu 46: Dy gm cc kim loi c iu ch trong cng nghip bng phng php in phn hp chtnng chy ca chng, l:

A.Na, Ca, Al. B.Na, Ca, Zn. C.Na, Cu, Al. D. Fe, Ca, Al.Cu 47: Dy gm cc cht u tc dng vi AgNO3 (hoc Ag2O) trong dung dch NH3, l:A. anehit axetic, butin-1, etilen. B. anehit axetic, axetilen, butin-2.C. axit fomic, vinylaxetilen, propin. D. anehit fomic, axetilen, etilen.

Cu 48: Hn hp gm hirocacbon X v oxi c t l s mol tng ng l 1:10. t chy hon ton hnhp trn thu c hn hp kh Y. Cho Y qua dung dch H2SO4 c, thu c hn hp kh Z c t khi ivi hiro bng 19. Cng thc phn t ca X l:

A. C3H8. B. C3H6. C. C4H8. D. C3H4.Cu 49: Mnh khng ng l:

A. Fe2+ oxi ho c Cu.B. Fe kh c Cu2+ trong dung dch.

C. Fe3+

c tnh oxi ha mnh hn Cu2+.

D. Tnh oxi ha ca cc ion tng theo th t: Fe2+, H+, Cu2+, Ag+.Phn II. Theo chng trnh phn ban (6 cu, t cu 51 n cu 56):



12/41

Cu 50: t chy hon ton mt lng cht hu c X thu c 3,36 lt kh CO 2, 0,56 lt kh N2 (cc kho ktc) v 3,15 gam H2O. Khi X tc dng vi dung dch NaOH thu c sn phm c muiH2N-CH2-COONa. Cng thc cu to thu gn ca X l:

A. H2N-CH2-COO-C3H7. B. H2N-CH2-COO-CH3.C. H2N-CH2-CH2-COOH. D. H2N-CH2-COO-C2H5.

Cu 51: Khi thc hin phn ng este ho 1 mol CH3COOH v 1 mol C2H5OH, lng este ln nht thu

c l 2/3 mol. t hiu sut cc i l 90% (tnh theo axit) khi tin hnh este ho 1 mol CH 3COOHcn s mol C2H5OH l (bit cc phn ng este ho thc hin cng nhit )A. 0,342. B. 2,925. C. 2,412. D. 0,456.

Cu 52: Pht biu khng ng l:A. Hp cht Cr(II) c tnh kh c trng cn hp cht Cr(VI) c tnh oxi ho mnh.B. Cc hp cht Cr2O3, Cr(OH)3, CrO, Cr(OH)2 u c tnh cht lng tnh.C. Cc hp cht CrO, Cr(OH)2 tc dng c vi dung dch HCl cn CrO3 tc dng c vi dung

dch NaOH.D. Thm dung dch kim vo mui icromat, mui ny chuyn thnh mui cromat.

Cu 53: thu ly Ag tinh khit t hn hp X (gm a mol Al2O3, b mol CuO, c mol Ag2O), ngi ta hotan X bi dung dch cha (6a + 2b + 2c) mol HNO3 c dung dch Y, sau thm (gi thit hiu sut

cc phn ng u l 100%):A. c mol bt Al vo Y. B. c mol bt Cu vo Y.C. 2c mol bt Al vo Y. D. 2c mol bt Cu vo Y.

Cu 54: Cho cc cht: HCN, H2, dung dch KMnO4, dung dch Br2. S cht phn ng c vi (CH3)2COl:

A. 2. B. 4. C. 1. D. 3.Cu 55: C 4 dung dch mui ring bit: CuCl2, ZnCl2, FeCl3, AlCl3. Nu thm dung dch KOH (d) rithm tip dung dch NH3 (d) vo 4 dung dch trn th s cht kt ta thu c l:

A. 4. B. 1. C. 3. D. 2.Cu 56: Mt este c cng thc phn t l C 4H6O2, khi thu phn trong mi trng axit thu caxetanehit. Cng thc cu to thu gn ca este l:

A. CH2=CH-COO-CH3. B. HCOO-C(CH3)=CH2.C. HCOO-CH=CH-CH3. D. CH3COO-CH=CH2.

-----------------------------------------o HT o------------------------------

Th sinh khng c s dng ti liu. Cn b coi thi khng gii thch g thm.----------

B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2007P N CHNH THC Mn thi: HA HC, khi A

Thi gian lm bi: 90 pht

M thi 182---------------------------

P N

Cu 1 2 3 4 5 6 7 8 9 100 B D A D C A C C C B1 A D A C B D A A C C2 D C C D D D C B A A3 C B D D B B D B D A4 A D B C A A C C A B5 B B B A B D - - - -



13/41

B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2007 CHNH THC Mn thi: HA HC, khi B



Cho bit khi lng nguyn t (theo vC) ca cc nguyn t: H = 1 ; N = 14 ; O = 16 ; Mg = 24 ; Al = 27S = 32 ; Cl = 35,5 ; K = 39 ; Ca = 40 ; Cr = 52 ; Cu = 64 ; Zn = 65 ; Ag = 108 ; Ba = 137 ; Pb = 207

PHN CHUNG CHO TT C CC TH SINH (44 cu, t cu 1 n cu 40)

Cu 1: Cho m gam mt ancol (ru) no, n chc X qua bnh ng CuO (d), nung nng. Sau khi phnng hon ton, khi lng cht rn trong bnh gim 0,32 gam. Hn hp hi thu c c t khi i vihiro l 15,5. Gi tr ca m l

A. 0,92. B. 0,32. C. 0,64. D. 0,46.Cu 2: Cc ng phn ng vi cng thc phn t C8H10O (u l dn xut ca benzen) c tnh cht: tchnc thu c sn phm c th trng hp to polime, khng tc dng c vi NaOH. S lng ng

phn ng vi cng thc phn t C8H10O, tho mn tnh cht trn lA. 1. B. 4. C. 3. D. 2.

Cu 3: Dy gm cc cht u lm giy qu tm m chuyn sang mu xanh l:A. anilin, metyl amin, amoniac. B. amoni clorua, metyl amin, natri hiroxit.C. anilin, amoniac, natri hiroxit. D. metyl amin, amoniac, natri axetat.

Cu 4: Trong phn ng t chy CuFeS2 to ra sn phm CuO, Fe2O3 v SO2 th mt phn t CuFeS2 sA. nhn 13 electron. B. nhn 12 electron. C. nhng 13 electron. D. nhng 12 electron.

Cu 5: Trong hp cht ion XY (X l kim loi, Y l phi kim), s electron ca cation bng s electron caanion v tng s electron trong XY l 20. Bit trong mi hp cht, Y ch c mt mc oxi ha duy nht.Cng thc XY l

A. AlN. B. MgO. C. LiF. D.NaF.Cu 6: Trong cc dung dch: HNO3, NaCl, Na2SO4, Ca(OH)2, KHSO4, Mg(NO3)2, dy gm cc cht utc dng c vi dung dch Ba(HCO3)2 l:

A. HNO3, NaCl, Na2SO4. B. HNO3, Ca(OH)2, KHSO4, Na2SO4.C.NaCl, Na2SO4, Ca(OH)2. D. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2.

Cu 7: Cho 200 ml dung dch AlCl3 1,5M tc dng vi V lt dung dch NaOH 0,5M, lng kt ta thuc l 15,6 gam. Gi tr ln nht ca V l

A. 1,2. B. 1,8. C. 2,4. D. 2.Cu 8: Trong mt bnh kn cha hi cht hu c X (c dng CnH2nO2) mch h v O2 (s mol O2 gp is mol cn cho phn ng chy) 139,9oC, p sut trong bnh l 0,8 atm. t chy hon ton X sau av nhit ban u, p sut trong bnh lc ny l 0,95 atm. X c cng thc phn t l

A. C2H4O2. B. CH2O2. C. C4H8O2. D. C3H6O2.Cu 9: Cho tt c cc ng phn n chc, mch h, c cng cng thc phn t C 2H4O2 ln lt tc dngvi: Na, NaOH, NaHCO3. S phn ng xy ra l

A. 2. B. 5. C. 4. D. 3.Cu 10: Cho 6,72 gam Fe vo dung dch cha 0,3 mol H 2SO4 c, nng (gi thit SO2 l sn phm khduy nht). Sau khi phn ng xy ra hon ton, thu c

A. 0,03 mol Fe2(SO4)3 v 0,06 mol FeSO4. B. 0,05 mol Fe2(SO4)3 v 0,02 mol Fe d.C. 0,02 mol Fe2(SO4)3 v 0,08 mol FeSO4. D. 0,12 mol FeSO4.

Cu 11: S cht ng vi cng thc phn t C7H8O (l dn xut ca benzen) u tc dng c vi dungdch NaOH l

A. 2. B. 4. C. 3. D. 1.

Cu 12:Nung m gam bt st trong oxi, thu c 3 gam hn hp cht rn X. Ha tan ht hn hp X trongdung dch HNO3 (d), thot ra 0,56 lt ( ktc) NO (l sn phm kh duy nht). Gi tr ca m l

A. 2,52. B. 2,22. C. 2,62. D. 2,32.



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Cu 13: Xenluloz trinitrat c iu ch t xenluloz v axit nitric c c xc tc axit sunfuric c,nng. c 29,7 kg xenluloz trinitrat, cn dng dung dch cha m kg axit nitric (hiu sut phn ng t90%). Gi tr ca m l

A. 42 kg. B. 10 kg. C. 30 kg. D. 21 kg.Cu 14: Cho 13,44 lt kh clo ( ktc) i qua 2,5 lt dung dch KOH 100oC. Sau khi phn ng xy rahon ton, thu c 37,25 gam KCl. Dung dch KOH trn c nng l

A. 0,24M. B. 0,48M. C. 0,4M. D. 0,2M.Cu 15: t chy hon ton 0,1 mol mt axit cacboxylic n chc, cn va V lt O 2 ( ktc), thu c0,3 mol CO2 v 0,2 mol H2O. Gi tr ca V l

A. 8,96. B. 11,2. C. 6,72. D. 4,48.Cu 16: Mt trong nhng im khc nhau ca protit so vi lipit v glucoz l

A.protit lun cha chc hiroxyl. B.protit lun cha nit.C.protit lun l cht hu c no. D.protit c khi lng phn t ln hn.

Cu 17: Cho 1,67 gam hn hp gm hai kim loi 2 chu k lin tip thuc nhm IIA (phn nhm chnhnhm II) tc dng ht vi dung dch HCl (d), thot ra 0,672 lt kh H2 ( ktc). Hai kim loi l

A. Be v Mg. B. Mg v Ca. C. Sr v Ba. D. Ca v Sr.Cu 18: Dy gm cc cht c dng tng hp cao su Buna-S l:

A. CH2=C(CH3)-CH=CH2, C6H5CH=CH2. B. CH2=CH-CH=CH2, C6H5CH=CH2.C. CH2=CH-CH=CH2, lu hunh. D. CH2=CH-CH=CH2, CH3-CH=CH2.

Cu 19: Cho cc loi hp cht: aminoaxit (X), mui amoni ca axit cacboxylic (Y), amin (Z), este caaminoaxit (T). Dy gm cc loi hp cht u tc dng c vi dung dch NaOH v u tc dng cvi dung dch HCl l

A. X, Y, Z, T. B. X, Y, T. C. X, Y, Z. D. Y, Z, T.Cu 20: Cho cc cht: axit propionic (X), axit axetic (Y), ancol (ru) etylic (Z) v imetyl ete (T). Dygm cc cht c sp xp theo chiu tng dn nhit si l

A. T, Z, Y, X. B. Z, T, Y, X. C. T, X, Y, Z. D. Y, T, X, Z.Cu 21: Hn hp X gm Na v Al. Cho m gam X vo mt lng d nc th thot ra V lt kh. Nu cngcho m gam X vo dung dch NaOH (d) th c 1,75V lt kh. Thnh phn phn trm theo khi lngca Na trong X l (bit cc th tch kh o trong cng iu kin)

A. 39,87%. B. 77,31%. C. 49,87%. D. 29,87%.Cu 22:Nung 13,4 gam hn hp 2 mui cacbonat ca 2 kim loi ha tr 2, thu c 6,8 gam cht rnv kh X. Lng kh X sinh ra cho hp th vo 75 ml dung dch NaOH 1M, khi lng mui khan thuc sau phn ng l

A. 5,8 gam. B. 6,5 gam. C. 4,2 gam. D. 6,3 gam.Cu 23: Khi cho Cu tc dng vi dung dch cha H2SO4 long v NaNO3, vai tr ca NaNO3 trong

phn ng lA. cht xc tc. B. cht oxi ho. C. mi trng. D. cht kh.

Cu 24: X l mt este no n chc, c t khi hi i vi CH4 l 5,5. Nu em un 2,2 gam este X vi

dung dch NaOH (d), thu c 2,05 gam mui. Cng thc cu to thu gn ca X lA. HCOOCH2CH2CH3. B. C2H5COOCH3.C. CH3COOC2H5. D. HCOOCH(CH3)2.

Cu 25: Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau. Cho hnhp X vo H2O (d), un nng, dung dch thu c cha

A.NaCl, NaOH, BaCl2. B.NaCl, NaOH.C.NaCl, NaHCO3, NH4Cl, BaCl2. D.NaCl.

Cu 26: Cho cc phn ng xy ra sau y:(1) AgNO3 + Fe(NO3)2 Fe(NO3)3 + Ag(2) Mn + 2HCl MnCl2 + H2Dy cc ion c sp xp theo chiu tng dn tnh oxi ho l

A. Mn2+

, H+

, Fe3+

, Ag+

. B. Ag+

, Fe3+

, H+

, Mn2+

.C. Ag+ , Mn2+, H+, Fe3+. D. Mn2+, H+, Ag+, Fe3+.Cu 27: trung ha 6,72 gam mt axit cacboxylic Y (no, n chc), cn dng 200 gam dung dch

NaOH 2,24%. Cng thc ca Y



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A. CH3COOH. B. HCOOH. C. C2H5COOH. D. C3H7COOH.Cu 28: Cho glixerol (glixerin) phn ng vi hn hp axit bo gm C17H35COOH v C15H31COOH,s loi trieste c to ra ti a l

A. 6. B. 3. C. 5. D. 4.Cu 29: Trong phng th nghim, ngi ta thng iu ch HNO3 t

A.NaNO2 v H2SO4 c. B.NaNO3 v H2SO4 c. C.NH3 v O2. D.NaNO3 v HCl c.

Cu 30: C th phn bit 3 dung dch: KOH, HCl, H2SO4 (long) bng mt thuc th lA. giy qu tm. B. Zn. C. Al. D. BaCO3.Cu 31: C 4 dung dch ring bit: a) HCl, b) CuCl2, c) FeCl3, d) HCl c ln CuCl2. Nhng vo mi dungdch mt thanh Fe nguyn cht. S trng hp xut hin n mn in ho l

A. 0. B. 1. C. 2. D. 3.Cu 32: in phn dung dch cha a mol CuSO4 v b mol NaCl (vi in cc tr, c mng ngn xp). dung dch sau in phn lm phenolphtalein chuyn sang mu hng th iu kin ca a v b l (bition SO42- khng b in phn trong dung dch)

A.b > 2a. B.b = 2a. C.b < 2a. D. 2b = a.Cu 33: Trn 100 ml dung dch (gm Ba(OH)2 0,1M v NaOH 0,1M) vi 400 ml dung dch (gm H2SO40,0375M v HCl 0,0125M), thu c dung dch X. Gi tr pH ca dung dch X l

A. 7. B. 2. C. 1. D. 6.Cu 34: Khi t 0,1 mol mt cht X (dn xut ca benzen), khi lng CO2 thu c nh hn 35,2 gam.Bit rng, 1 mol X ch tc dng c vi 1 mol NaOH. Cng thc cu to thu gn ca X l

A. C2H5C6H4OH. B. HOCH2C6H4COOH. C. HOC6H4CH2OH. D. C6H4(OH)2.Cu 35: Trong mt nhm A (phn nhm chnh), tr nhm VIIIA (phn nhm chnh nhm VIII), theochiu tng ca in tch ht nhn nguyn t th

A. tnh phi kim gim dn, bn knh nguyn t tng dn.B. tnh kim loi tng dn, m in tng dn.C. m in gim dn, tnh phi kim tng dn.D. tnh kim loi tng dn, bn knh nguyn t gim dn.

Cu 36: thu c Al2O3 t hn hp Al2O3 v Fe2O3, ngi ta ln lt:A. dng kh H2 nhit cao, dung dch NaOH (d).B. dng kh CO nhit cao, dung dch HCl (d).C. dng dung dch NaOH (d), dung dch HCl (d), ri nung nng.D. dng dung dch NaOH (d), kh CO2 (d), ri nung nng.

Cu 37: X l mt ancol (ru) no, mch h. t chy hon ton 0,05 mol X cn 5,6 gam oxi, thu chi nc v 6,6 gam CO2. Cng thc ca X l

A. C2H4(OH)2. B. C3H7OH. C. C3H5(OH)3. D. C3H6(OH)2.Cu 38: Cho hn hp Fe, Cu phn ng vi dung dch HNO3 long. Sau khi phn ng hon ton, thu cdung dch ch cha mt cht tan v kim loi d. Cht tan l

A. Cu(NO3)2. B. HNO3. C. Fe(NO3)2. D. Fe(NO3)3.

Cu 39: Cho cc cht: etyl axetat, anilin, ancol (ru) etylic, axit acrylic, phenol, phenylamoni clorua,ancol (ru) benzylic, p-crezol. Trong cc cht ny, s cht tc dng c vi dung dch NaOH lA. 4. B. 6. C. 5. D. 3.

Cu 40: Thc hin hai th nghim:1) Cho 3,84 gam Cu phn ng vi 80 ml dung dch HNO3 1M thot ra V1 lt NO.2) Cho 3,84 gam Cu phn ng vi 80 ml dung dch cha HNO3 1M v H2SO4 0,5 M thot ra V2 lt NO.Bit NO l sn phm kh duy nht, cc th tch kh o cng iu kin. Quan h gia V1 v V2 l

A. V2 = V1. B. V2 = 2V1. C. V2 = 2,5V1. D. V2 = 1,5V1.Cu 41: t chy hon ton a mol mt anehit X (mch h) to ra b mol CO 2 v c mol H2O (bit rng

b = a + c). Trong phn ng trng gng, mt phn t X ch cho 2 electron. X thuc dy ng ngA. anehit no, n chc. B. anehit khng no c hai ni i, n chc.

C. anehit khng no c mt ni i, n chc. D. anehit no, hai chc.Cu 42: Pht biu khng ng lA. Dung dch fructoz ho tan c Cu(OH)2.B. Thy phn (xc tc H+, to) saccaroz cng nh mantoz u cho cng mt monosaccarit.



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C. Sn phm thy phn xenluloz (xc tc H+, to) c th tham gia phn ng trng gng.D. Dung dch mantoz tc dng vi Cu(OH)2 khi un nng cho kt ta Cu2O.Cu 43: Hai este n chc X v Y l ng phn ca nhau. Khi ho hi 1,85 gam X, thu c th tch hing bng th tch ca 0,7 gam N2 (o cng iu kin). Cng thc cu to thu gn ca X v Y lA. HCOOC2H5 v CH3COOCH3. B. C2H3COOC2H5 v C2H5COOC2H3.C. C2H5COOCH3 v HCOOCH(CH3)2. D. HCOOCH2CH2CH3 v CH3COOC2H5.

Cu 44: C 3 cht lng benzen, anilin, stiren, ng ring bit trong 3 l mt nhn. Thuc th phn bit3 cht lng trn lA. dung dch phenolphtalein. B. nc brom.C. dung dch NaOH. D. giy qu tm.

PHN RING: Th sinh ch c chn lm 1 trong 2 phn (Phn I hoc Phn II).Phn I. Theo chng trnh KHNG phn ban (6 cu, t cu 45 n cu 50):Cu 45: Cho 4 phn ng:(1) Fe + 2HCl FeCl2 + H2(2) 2NaOH + (NH4)2SO4 Na2SO4 + 2NH3 + 2H2O(3) BaCl2 + Na2CO3 BaCO3 + 2NaCl

(4) 2NH3 + 2H2O + FeSO4 Fe(OH)2 + (NH4)2SO4Cc phn ng thuc loi phn ng axit - baz l

A. (2), (4). B. (3), (4). C. (2), (3). D. (1), (2).Cu 46: Thy phn este c cng thc phn t C 4H8O2 (vi xc tc axit), thu c 2 sn phm hu c Xv Y. T X c th iu ch trc tip ra Y. Vy cht X l

A. ru metylic. B. etyl axetat. C. axit fomic. D. ru etylic.Cu 47: Cho m gam hn hp bt Zn v Fe vo lng d dung dch CuSO4. Sau khi kt thc cc phnng, lc b phn dung dch thu c m gam bt rn. Thnh phn phn trm theo khi lng ca Zn tronghn hp bt ban u l

A. 90,27%. B. 85,30%. C. 82,20%. D. 12,67%.Cu 48: Cho 0,01 mol mt hp cht ca st tc dng ht vi H2SO4 c nng (d), thot ra 0,112 lt(ktc) kh SO2 (l sn phm kh duy nht). Cng thc ca hp cht st l

A. FeS. B. FeS2. C. FeO D. FeCO3.Cu 49: Khi oxi ha hon ton 2,2 gam mt anehit n chc thu c 3 gam axit tng ng. Cng thcca anehit l

A. HCHO. B. C2H3CHO. C. C2H5CHO. D. CH3CHO.Cu 50: Khi brom ha mt ankan ch thu c mt dn xut monobrom duy nht c t khi hi i vihiro l 75,5. Tn ca ankan l

A. 3,3-imetylhecxan. B. 2,2-imetylpropan.C. isopentan. D. 2,2,3-trimetylpentan.

Phn II. Theo chng trnh phn ban (6 cu, t cu 51 n cu 56):Cu 51: Trong pin in ha Zn-Cu, qu trnh kh trong pin lA. Zn2+ + 2e Zn. B. Cu Cu2+ + 2e.C. Cu2+ + 2e Cu. D. Zn Zn2+ + 2e.

Cu 52: Cho cc phn ng:(1) Cu2O + Cu2S

ot (2) Cu(NO3)2 ot

(3) CuO + CO ot (4) CuO + NH3

ot

S phn ng to ra kim loi Cu lA. 2. B. 3. C. 1. D. 4.

Cu 53: Oxi ho 4,48 lt C2H4 ( ktc) bng O2 (xc tc PdCl2, CuCl2), thu c cht X n chc. Tonb lng cht X trn cho tc dng vi HCN (d) th c 7,1 gam CH3CH(CN)OH (xianohirin). Hiusut qu trnh to CH3CH(CN)OH t C2H4 l

A. 70%. B. 50%. C. 60%. D. 80%.



17/41

Cu 54: Nung hn hp bt gm 15,2 gam Cr2O3 v m gam Al nhit cao. Sau khi phn ng honton, thu c 23,3 gam hn hp rn X. Cho ton b hn hp X phn ng vi axit HCl (d) thot ra V ltkh H2 ( ktc). Gi tr ca V l

A. 7,84. B. 4,48. C. 3,36. D. 10,08.

Cu 55: Cho s phn ng: NH3 ZYXotCuOHONOICH + ,

)1:1(3.

Bit Z c kh nng tham gia phn ng trng gng. Hai cht Y v Z ln lt l:A. C2H5OH, HCHO. B. C2H5OH, CH3CHO.C. CH3OH, HCHO. D. CH3OH, HCOOH.

Cu 56: Dy gm cc cht u phn ng vi phenol l:A. dung dch NaCl, dung dch NaOH, kim loi Na.B. nc brom, anhirit axetic, dung dch NaOH.C. nc brom, axit axetic, dung dch NaOH.D. nc brom, anehit axetic, dung dch NaOH.

---------------------------------------------------------- HT ----------

Th sinh khng c s dng ti liu. Cn b coi thi khng gii thch g thm.----------

B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2007P N CHNH THC Mn thi: HA HC, khi B


M thi 285---------------------------

P N

Cu 1 2 3 4 5 6 7 8 9 1001234

5 - - - -



18/41

B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2008

CHNH THC Mn thi: HA HC, khi A( thi ny gm c 5 trang) Thi gian lm bi: 90 pht

M thi 263H v tn th sinh: .............................................................................S bo danh: .......................................................................................Cho bit khi lng nguyn t (theo vC) ca cc nguyn t:H = 1; C = 12; N = 14; O = 16; Na = 23; Mg = 24; Al = 27; S = 32; Cl = 35,5; K = 39; Ca = 40; Cr = 52;Fe = 56; Cu = 64; Br = 80; Ag = 108; Ba = 137.

PHN CHUNG CHO TT C TH SINH (44 cu, t cu 1 n cu 44):Cu 1: un nng V lt hi anehit X vi 3V lt kh H2 (xc tc Ni) n khi phn ng xy ra hon ton chthu c mt hn hp kh Y c th tch 2V lt (cc th tch kh o cng iu kin nhit , p sut).

Ngng t Y thu c cht Z; cho Z tc dng vi Na sinh ra H2 c s mol bng s mol Z phn ng.Cht X l anehit

A. khng no (cha mt ni i C=C), hai chc.B. no, hai chc.C. no, n chc.D. khng no (cha mt ni i C=C), n chc.

Cu 2: Cho m gam hn hp X gm hai ru (ancol) no, n chc, k tip nhau trong dy ng ng tcdng vi CuO (d) nung nng, thu c mt hn hp rn Z v mt hn hp hi Y (c t khi hi so viH2 l 13,75). Cho ton b Y phn ng vi mt lng d Ag 2O (hoc AgNO3) trong dung dch NH3 un

nng, sinh ra 64,8 gam Ag. Gi tr ca m lA. 7,8. B. 8,8. C. 7,4. D. 9,2.Cu 3: T hai mui X v Y thc hin cc phn ng sau:

X ot X1 + CO2 X1 + H2O X2

X2 + Y X + Y1 + H2O X2 + 2Y X + Y2 + H2OHai mui X, Y tng ng l

A. CaCO3, NaHSO4. B. BaCO3, Na2CO3. C. CaCO3, NaHCO3. D. MgCO3, NaHCO3.Cu 4: ho tan hon ton 2,32 gam hn hp gm FeO, Fe3O4 v Fe2O3 (trong s mol FeO bng smol Fe2O3), cn dng va V lt dung dch HCl 1M. Gi tr ca V l

A. 0,23. B. 0,18. C. 0,08. D. 0,16.Cu 5: Khi in phn NaCl nng chy (in cc tr), ti catt xy ra

A. s kh ion Cl-. B. s oxi ho ion Cl-. C. s oxi ho ion Na+. D. s kh ion Na+.Cu 6: S ng phn este ng vi cng thc phn t C4H8O2 l

A. 5. B. 2. C. 4. D. 6.Cu 7: Cho 2,13 gam hn hp X gm ba kim loi Mg, Cu v Al dng bt tc dng hon ton vi oxithu c hn hp Y gm cc oxit c khi lng 3,33 gam. Th tch dung dch HCl 2M va phnng ht vi Y l

A. 57 ml. B. 50 ml. C. 75 ml. D. 90 ml.Cu 8: Dy gm cc cht c xp theo chiu nhit si tng dn t tri sang phi l:

A. CH3CHO, C2H5OH, C2H6, CH3COOH. B. CH3COOH, C2H6, CH3CHO, C2H5OH.C. C2H6, C2H5OH, CH3CHO, CH3COOH. D. C2H6, CH3CHO, C2H5OH, CH3COOH.

Cu 9: C cc dung dch ring bit sau:C6H5-NH3Cl (phenylamoni clorua), H2N-CH2-CH2-CH(NH2)COOH, ClH3N-CH2-COOH,HOOC-CH2-CH2-CH(NH2)-COOH, H2N-CH2-COONa.S lng cc dung dch c pH < 7 l

A. 2. B. 5. C. 4. D. 3.



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Cu 10: Cho 3,6 gam anehit n chc X phn ng hon ton vi mt lng d Ag2O (hoc AgNO3)trong dung dch NH3 un nng, thu c m gam Ag. Ho tan hon ton m gam Ag bng dung dch HNO3c, sinh ra 2,24 lt NO2 (sn phm kh duy nht, ktc). Cng thc ca X l

A. C3H7CHO. B. HCHO. C. C4H9CHO. D. C2H5CHO.Cu 11: Pht biu ng l:

A. Tnh axit ca phenol yu hn ca ru (ancol).

B. Cao su thin nhin l sn phm trng hp ca isopren.C. Cc cht etilen, toluen v stiren u tham gia phn ng trng hp.D. Tnh baz ca anilin mnh hn ca amoniac.

Cu 12: Trong phng th nghim, ngi ta iu ch oxi bng cchA. in phn nc. B. nhit phn Cu(NO3)2.C. nhit phn KClO3 c xc tc MnO2. D. chng ct phn on khng kh lng.

Cu 13: Khi lng ca mt on mch t nilon-6,6 l 27346 vC v ca mt on mch t capron l17176 vC. S lng mt xch trong on mch nilon-6,6 v capron nu trn ln lt l

A. 113 v 152. B. 121 v 114. C. 121 v 152. D. 113 v 114.Cu 14: Cho V lt dung dch NaOH 2M vo dung dch cha 0,1 mol Al2(SO4)3 v 0,1 mol H2SO4 n khi

phn ng hon ton, thu c 7,8 gam kt ta. Gi tr ln nht ca V thu c lng kt ta trn l

A. 0,45. B. 0,35. C. 0,25. D. 0,05.Cu 15: Pht biu khng ng l:

A. Trong dung dch, H2N-CH2-COOH cn tn ti dng ion lng cc H3N+-CH2-COO-.B. Aminoaxit l hp cht hu c tp chc, phn t cha ng thi nhm amino v nhm cacboxyl.C. Aminoaxit l nhng cht rn, kt tinh, tan tt trong nc v c v ngt.D. Hp cht H2N-CH2-COOH3N-CH3 l este ca glyxin (hay glixin).

Cu 16: Gluxit (cacbohirat) ch cha hai gc glucoz trong phn t lA. saccaroz. B. tinh bt. C. mantoz. D. xenluloz.

Cu 17: Cho cc cht: Al, Al2O3, Al2(SO4)3, Zn(OH)2, NaHS, K2SO3, (NH4)2CO3. S cht u phn ngc vi dung dch HCl, dung dch NaOH l

A. 4. B. 5. C. 7. D. 6.Cu 18: Pht biu ng l:

A. Phn ng gia axit v ru khi c H2SO4 c l phn ng mt chiu.B. Tt c cc este phn ng vi dung dch kim lun thu c sn phm cui cng l mui v ru

(ancol).C. Khi thy phn cht bo lun thu c C2H4(OH)2.D. Phn ng thy phn este trong mi trng axit l phn ng thun nghch.

Cu 19: Cho glixerin trioleat (hay triolein) ln lt vo mi ng nghim cha ring bit: Na, Cu(OH)2,CH3OH, dung dch Br2, dung dch NaOH. Trong iu kin thch hp, s phn ng xy ra l

A. 2. B. 3. C. 5. D. 4.Cu 20: Cho cc phn ng sau:

4HCl + MnO2 MnCl2 + Cl2 + 2H2O.2HCl + Fe FeCl2 + H2.14HCl + K2Cr2O7 2KCl + 2CrCl3 + 3Cl2 + 7H2O.6HCl + 2Al 2AlCl3 + 3H2.16HCl + 2KMnO4 2KCl + 2MnCl2 + 5Cl2 + 8H2O.S phn ng trong HCl th hin tnh oxi ha l

A. 2. B. 1. C. 4. D. 3.Cu 21: Khi phn tch thnh phn mt ru (ancol) n chc X th thu c kt qu: tng khi lngca cacbon v hiro gp 3,625 ln khi lng oxi. S ng phn ru (ancol) ng vi cng thc phn tca X l

A. 3. B. 4. C. 2. D. 1.

Cu 22: Cho V lt hn hp kh ( ktc) gm CO v H2 phn ng vi mt lng d hn hp rn gm CuOv Fe3O4 nung nng. Sau khi cc phn ng xy ra hon ton, khi lng hn hp rn gim 0,32 gam. Gitr ca V l

A. 0,448. B. 0,112. C. 0,224. D. 0,560.



20/41

Cu 23: Cho s chuyn ho sau:C3H4O2 + NaOH X + Y X + H2SO4 long Z + TBit Y v Z u c phn ng trng gng. Hai cht Y, Z tng ng l:

A. HCHO, CH3CHO. B. HCHO, HCOOH.C. CH3CHO, HCOOH. D. HCOONa, CH3CHO.

Cu 24: Ho tan hon ton 0,3 mol hn hp gm Al v Al 4C3 vo dung dch KOH (d), thu c a mol

hn hp kh v dung dch X. Sc kh CO 2 (d) vo dung dch X, lng kt ta thu c l 46,8 gam. Gitr ca a lA. 0,55. B. 0,60. C. 0,40. D. 0,45.

Cu 25: un nng hn hp kh gm 0,06 mol C2H2 v 0,04 mol H2 vi xc tc Ni, sau mt thi gian thuc hn hp kh Y. Dn ton b hn hp Y li t t qua bnh ng dung dch brom (d) th cn li0,448 lt hn hp kh Z ( ktc) c t khi so vi O2 l 0,5. Khi lng bnh dung dch brom tng l

A. 1,04 gam. B. 1,32 gam. C. 1,64 gam. D. 1,20 gam.Cu 26: Trung ho 5,48 gam hn hp gm axit axetic, phenol v axit benzoic, cn dng 600 ml dungdch NaOH 0,1M. C cn dung dch sau phn ng, thu c hn hp cht rn khan c khi lng l

A. 8,64 gam. B. 6,84 gam. C. 4,90 gam. D. 6,80 gam.Cu 27: Hp th hon ton 4,48 lt kh CO2 ( ktc) vo 500 ml dung dch hn hp gm NaOH 0,1M v

Ba(OH)2 0,2M, sinh ra m gam kt ta. Gi tr ca m lA. 19,70. B. 17,73. C. 9,85. D. 11,82.

Cu 28: Trn ln V ml dung dch NaOH 0,01M vi V ml dung dch HCl 0,03 M c 2V ml dung dchY. Dung dch Y c pH l

A. 4. B. 3. C. 2. D. 1.Cu 29: Cho 11,36 gam hn hp gm Fe, FeO, Fe2O3 v Fe3O4 phn ng ht vi dung dch HNO3 long(d), thu c 1,344 lt kh NO (sn phm kh duy nht, ktc) v dung dch X. C cn dung dch X thuc m gam mui khan. Gi tr ca m l

A. 38,72. B. 35,50. C. 49,09. D. 34,36.Cu 30: Cho hn hp gm Na v Al c t l s mol tng ng l 1 : 2 vo nc (d). Sau khi cc phnng xy ra hon ton, thu c 8,96 lt kh H2 ( ktc) v m gam cht rn khng tan. Gi tr ca m l

A. 10,8. B. 5,4. C. 7,8. D. 43,2.Cu 31: Hp cht trong phn t c lin kt ion l

A.NH4Cl. B.NH3. C. HCl. D. H2O.Cu 32: Cho cn bng ho hc: 2SO2 (k) + O2 (k) 2SO3 (k); phn ng thun l phn ng to nhit.Pht biu ng l:

A. Cn bng chuyn dch theo chiu thun khi tng nhit .B. Cn bng chuyn dch theo chiu nghch khi gim nng O2.C. Cn bng chuyn dch theo chiu thun khi gim p sut h phn ng.D. Cn bng chuyn dch theo chiu nghch khi gim nng SO3.

Cu 33: S ng phn hirocacbon thm ng vi cng thc phn t C8H10 l

A. 2. B. 4. C. 3. D. 5.Cu 34: Hn hp X c t khi so vi H2 l 21,2 gm propan, propen v propin. Khi t chy hon ton0,1 mol X, tng khi lng ca CO2 v H2O thu c l

A. 20,40 gam. B. 18,60 gam. C. 18,96 gam. D. 16,80 gam.Cu 35: Bn knh nguyn t ca cc nguyn t: 3Li, 8O, 9F, 11Na c xp theo th t tng dn t trisang phi l

A. F, O, Li, Na. B. F, Na, O, Li. C. F, Li, O, Na. D. Li, Na, O, F.Cu 36: X l kim loi phn ng c vi dung dch H2SO4 long, Y l kim loi tc dng c vi dungdch Fe(NO3)3. Hai kim loi X, Y ln lt l (bit th t trong dy th in ho: Fe 3+/Fe2+ ng trcAg+/Ag)

A. Fe, Cu. B. Cu, Fe. C. Ag, Mg. D. Mg, Ag.

Cu 37: Tinh bt, xenluloz, saccaroz, mantoz u c kh nng tham gia phn ngA. ho tan Cu(OH)2. B. trng ngng. C. trng gng. D. thy phn.Cu 38: Este X c cc c im sau:- t chy hon ton X to thnh CO2 v H2O c s mol bng nhau;



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- Thu phn X trong mi trng axit c cht Y (tham gia phn ng trng gng) v cht Z (c snguyn t cacbon bng mt na s nguyn t cacbon trong X). Pht biu khng ng l:

A. t chy hon ton 1 mol X sinh ra sn phm gm 2 mol CO2 v 2 mol H2O.B. Cht Y tan v hn trong nc.C. Cht X thuc loi este no, n chc.D. un Z vi dung dch H2SO4 c 170oC thu c anken.

Cu 39: Cho Cu v dung dch H2SO4 long tc dng vi cht X (mt loi phn bn ha hc), thy thot rakh khng mu ha nu trong khng kh. Mt khc, khi X tc dng vi dung dch NaOH th c kh mikhai thot ra. Cht X l

A. amophot. B. ure. C. natri nitrat. D. amoni nitrat.Cu 40: Cho cc phn ng sau:

(1) Cu(NO3)2 ot

(2) NH4NO2 ot

(3) NH3 + O2 PtCo ,850

(4) NH3 + Cl2 ot

(5) NH4Cl ot

(6) NH3 + CuO ot

Cc phn ng u to kh N2 l:A. (2), (4), (6). B. (3), (5), (6).

C. (1), (3), (4). D. (1), (2), (5).Cu 41: Cho 3,2 gam bt Cu tc dng vi 100 ml dung dch hn hp gm HNO3 0,8M v H2SO4 0,2M.Sau khi cc phn ng xy ra hon ton, sinh ra V lt kh NO (sn phm kh duy nht, ktc). Gi tr caV l

A. 0,746. B. 0,448. C. 1,792. D. 0,672.Cu 42: Khi tch nc t ru (ancol) 3-metylbutanol-2 (hay 3-metylbutan-2-ol), sn phm chnhthu c l

A. 3-metylbuten-1 (hay 3-metylbut-1-en). B. 2-metylbuten-2 (hay 2-metylbut-2-en).C. 3-metylbuten-2 (hay 3-metylbut-2-en). D. 2-metylbuten-3 (hay 2-metylbut-3-en).

Cu 43: Cho s chuyn ha: CH4 C2H2 C2H3Cl PVC. tng hp 250 kg PVC theo s trnth cn V m3 kh thin nhin ( ktc). Gi tr ca V l (bit CH4 chim 80% th tch kh thin nhin v

hiu sut ca c qu trnh l 50%)A. 358,4. B. 448,0. C. 286,7. D. 224,0.

Cu 44: Cho hn hp bt gm 2,7 gam Al v 5,6 gam Fe vo 550 ml dung dch AgNO3 1M. Sau khi ccphn ng xy ra hon ton, thu c m gam cht rn. Gi tr ca m l (bit th t trong dy th in ho:Fe3+/Fe2+ ng trc Ag+/Ag)

A. 59,4. B. 64,8. C. 32,4. D. 54,0.

PHN RING__________Th sinh ch c lm 1 trong 2 phn: phn I hoc phn II__________Phn I. Theo chng trnh KHNG phn ban (6 cu, t cu 45 n cu 50):

Cu 45:Nung nng m gam hn hp Al v Fe2O3 (trong mi trng khng c khng kh) n khi phnng xy ra hon ton, thu c hn hp rn Y. Chia Y thnh hai phn bng nhau:- Phn 1 tc dng vi dung dch H2SO4 long (d), sinh ra 3,08 lt kh H2 ( ktc);- Phn 2 tc dng vi dung dch NaOH (d), sinh ra 0,84 lt kh H2 ( ktc).Gi tr ca m l

A. 22,75 B. 21,40. C. 29,40. D. 29,43.Cu 46: Khi crackinh hon ton mt th tch ankan X thu c ba th tch hn hp Y (cc th tch kh o cng iu kin nhit v p sut) ; t khi ca Y so vi H2 bng 12. Cng thc phn t ca X l

A. C6H14. B. C3H8. C. C4H10. D. C5H12.Cu 47: Trong cc loi qung st, qung c hm lng st cao nht l

A. hematit nu. B. manhetit.

C. xierit. D. hematit .Cu 48: Cho cc cht sau: CH2=CH-CH2-CH2-CH=CH2, CH2=CH-CH=CH-CH2-CH3,CH3-C(CH3)=CH-CH3, CH2=CH-CH2-CH=CH2. S cht c ng phn hnh hc l

A. 2. B. 3. C. 1. D. 4.



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Cu 49: Cho iso-pentan tc dng vi Cl2 theo t l s mol 1 : 1, s sn phm monoclo ti a thu c lA. 2. B. 3. C. 5. D. 4.

Cu 50: Bit rng ion Pb2+ trong dung dch oxi ha c Sn. Khi nhng hai thanh kim loi Pb v Sn cni vi nhau bng dy dn in vo mt dung dch cht in li th

A. c Pb v Sn u b n mn in ho. B. c Pb v Sn u khng b n mn in ho.C. ch c Pb b n mn in ho. D. ch c Sn b n mn in ho.

Phn II. Theo chng trnh phn ban (6 cu, t cu 51 n cu 56):Cu 51: oxi ha hon ton 0,01 mol CrCl3 thnh K2CrO4 bng Cl2 khi c mt KOH, lng ti thiuCl2 v KOH tng ng l

A. 0,015 mol v 0,04 mol. B. 0,015 mol v 0,08 mol.C. 0,03 mol v 0,08 mol. D. 0,03 mol v 0,04 mol.

Cu 52: Mt pin in ho c in cc Zn nhng trong dung dch ZnSO4 v in cc Cu nhng trong dungdch CuSO4. Sau mt thi gian pin phng in th khi lng

A. c hai in cc Zn v Cu u tng.B. in cc Zn gim cn khi lng in cc Cu tng.

C. in cc Zn tng cn khi lng in cc Cu gim.D. c hai in cc Zn v Cu u gim.

Cu 53: Lng glucoz cn dng to ra 1,82 gam sobitol vi hiu sut 80% lA. 2,25 gam. B. 1,80 gam. C. 1,82 gam. D. 1,44 gam.

Cu 54: S ng phn xeton ng vi cng thc phn t C5H10O lA. 5. B. 6. C. 3. D. 4.

Cu 55: Cho s chuyn ho qung ng thnh ng:

CuFeS2 + otO ,2

X + otO ,2

Y + otX,

Cu.Hai cht X, Y ln lt l:

A. Cu2O, CuO. B. CuS, CuO. C. Cu2S, CuO. D. Cu2S, Cu2O.

Cu 56: Tc nhn ch yu gy ma axit lA. CO v CH4. B. CH4 v NH3. C. SO2 v NO2. D. CO v CO2.----------------------------------------------------------------------------------------- ----------- HT ----------



M thi 263---------------------------

P N

Cu 1 2 3 4 5 6 7 8 9 100 B A C C D C C D D A1 B C C A D C B D A A2 B A C B B D C C A B3 A B B C A A D D D A4 D B B A A D B C D D5 B B A C D C - - - -



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M thi 195H v tn th sinh: .............................................................................S bo danh: .......................................................................................Cho bit khi lng nguyn t (theo vC) ca cc nguyn t:H = 1; Li = 7; C = 12; N = 14; O = 16; Na = 23; Mg = 24; Al = 27; P = 31; S = 32; Cl = 35,5; K = 39;Ca = 40; Fe = 56; Cu = 64; Zn = 65; As = 75; Br = 80; Rb = 85,5; Ag = 108; Ba = 137.

PHN CHUNG CHO TT C TH SINH (44 cu, t cu 1 n cu 44):Cu 1: Cho bit cc phn ng xy ra sau:

2FeBr2 + Br2 2FeBr32NaBr + Cl2 2NaCl + Br2

Pht biu ng l:A. Tnh kh ca Cl- mnh hn ca Br-. B. Tnh oxi ha ca Br2 mnh hn ca Cl2.C. Tnh kh ca Br- mnh hn ca Fe2+. D. Tnh oxi ha ca Cl2 mnh hn ca Fe3+.

Cu 2: Dy cc nguyn t sp xp theo chiu tng dn tnh phi kim t tri sang phi l:A. P, N, F, O. B.N, P, F, O. C. P, N, O, F. D.N, P, O, F.

Cu 3:Nguyn tc luyn thp t gang l:A. Dng O2 oxi ho cc tp cht Si, P, S, Mn, trong gang thu c thp.B. Dng cht kh CO kh oxit st thnh st nhit cao.C. Dng CaO hoc CaCO3 kh tp cht Si, P, S, Mn, trong gang thu c thp.D. Tng thm hm lng cacbon trong gang thu c thp.

Cu 4: un nng cht H2N-CH2-CONH-CH(CH3)-CONH-CH2-COOH trong dung dch HCl (d), sau khicc phn ng kt thc thu c sn phm l:

A. H2N-CH2-COOH, H2N-CH2-CH2-COOH.B. H3N+-CH2-COOHCl-, H3N+-CH2-CH2-COOHCl-.C. H3N+-CH2-COOHCl-, H3N+-CH(CH3)-COOHCl-.D. H2N-CH2-COOH, H2N-CH(CH3)-COOH.

Cu 5: Cho s chuyn ho sau: Toluen tFe,1mol),:(1Bro

2 X p,tdu,NaOHo

Y HCl(du) Z.Trong X, Y, Z u l hn hp ca cc cht hu c. Z c thnh phn chnh gm

A. m-metylphenol v o-metylphenol. B.benzyl bromua v o-bromtoluen.C. o-bromtoluen vp-bromtoluen. D. o-metylphenol vp-metylphenol.

Cu 6: Mt mu nc cng cha cc ion: Ca2+, Mg2+, HCO3-, Cl-, SO42-. Cht c dng lm mmmu nc cng trn l

A.Na2CO3. B. HCl. C. H2SO4. D.NaHCO3.Cu 7: un nng hn hp gm hai ru (ancol) n chc, mch h, k tip nhau trong dy ng ngvi H2SO4 c 140oC. Sau khi cc phn ng kt thc, thu c 6 gam hn hp gm ba ete v 1,8 gamnc. Cng thc phn t ca hai ru trn l

A. CH3OH v C2H5OH. B. C2H5OH v C3H7OH.C. C3H5OH v C4H7OH. D. C3H7OH v C4H9OH.

Cu 8: Cho cc cht: ru (ancol) etylic, glixerin (glixerol), glucoz, imetyl ete v axit fomic. S chttc dng c vi Cu(OH)2 l

A. 1. B. 3. C. 4. D. 2.



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Cu 9: Oxi ho 1,2 gam CH3OH bng CuO nung nng, sau mt thi gian thu c hn hp sn phm X(gm HCHO, H2O v CH3OH d). Cho ton b X tc dng vi lng d Ag2O (hoc AgNO3) trong dungdch NH3, c 12,96 gam Ag. Hiu sut ca phn ng oxi ho CH3OH l

A. 76,6%. B. 80,0%. C. 65,5%. D. 70,4%.Cu 10: Khi lng ca tinh bt cn dng trong qu trnh ln men to thnh 5 lt ru (ancol) etylic46 l (bit hiu sut ca c qu trnh l 72% v khi lng ring ca ru etylic nguyn cht l 0,8 g/ml)

A. 5,4 kg. B. 5,0 kg. C. 6,0 kg. D. 4,5 kg.

Cu 11:Nung mt hn hp rn gm a mol FeCO3 v b mol FeS2 trong bnh kn cha khng kh (d). Saukhi cc phn ng xy ra hon ton, a bnh v nhit ban u, thu c cht rn duy nht l Fe2O3 vhn hp kh. Bit p sut kh trong bnh trc v sau phn ng bng nhau, mi lin h gia a v b l (bitsau cc phn ng, lu hunh mc oxi ho +4, th tch cc cht rn l khng ng k)

A. a = 0,5b. B. a = b. C. a = 4b. D. a = 2b.Cu 12: Cho 9,12 gam hn hp gm FeO, Fe2O3, Fe3O4 tc dng vi dung dch HCl (d). Sau khi cc

phn ng xy ra hon ton, c dung dch Y; c cn Y thu c 7,62 gam FeCl2 v m gam FeCl3. Gi trca m l

A. 9,75. B. 8,75. C. 7,80. D. 6,50.

Cu 13: Cho dy cc cht v ion: Cl2, F2, SO2, Na+, Ca2+, Fe2+, Al3+, Mn2+, S2-, Cl-. S cht v ion trongdy u c tnh oxi ho v tnh kh l

A. 3. B. 4. C. 6. D. 5.Cu 14: Phn ng nhit phn khng ng l

A. 2KNO3 ot 2KNO2 + O2. B.NH4NO2

ot N2 + 2H2O.

C.NH4Cl ot NH3 + HCl. D.NaHCO3

ot NaOH + CO2.Cu 15: Cho dy cc cht: KAl(SO4)2.12H2O, C2H5OH, C12H22O11 (saccaroz), CH3COOH, Ca(OH)2,CH3COONH4. S cht in li l

A. 3. B. 4. C. 5. D. 2.Cu 16: Cho 2,16 gam Mg tc dng vi dung dch HNO3 (d). Sau khi phn ng xy ra hon ton thu

c 0,896 lt kh NO ( ktc) v dung dch X. Khi lng mui khan thu c khi lm bay hi dungdch X lA. 8,88 gam. B. 13,92 gam. C. 6,52 gam. D. 13,32 gam.

Cu 17: Thnh phn chnh ca qung photphorit lA. Ca3(PO4)2. B.NH4H2PO4. C. Ca(H2PO4)2. D. CaHPO4.

Cu 18: un nng mt ru (ancol) n chc X vi dung dch H 2SO4 c trong iu kin nhit thchhp sinh ra cht hu c Y, t khi hi ca X so vi Y l 1,6428. Cng thc phn t ca Y l

A. C3H8O. B. C2H6O. C. CH4O. D. C4H8O.Cu 19: Cho cc phn ng:Ca(OH)2 + Cl2 CaOCl2 + H2O2H2S + SO2 3S + 2H2O

2NO2 + 2NaOH NaNO3 + NaNO2 + H2O4KClO3

ot KCl + 3KClO4O3 O2 + OS phn ng oxi ho kh l

A. 5. B. 2. C. 3. D. 4.Cu 20: Cho 8,9 gam mt hp cht hu c X c cng thc phn t C 3H7O2N phn ng vi 100 ml dungdch NaOH 1,5M. Sau khi phn ng xy ra hon ton, c cn dung dch thu c 11,7 gam cht rn.Cng thc cu to thu gn ca X l

A. HCOOH3NCH=CH2. B. H2NCH2CH2COOH.C. CH2=CHCOONH4. D. H2NCH2COOCH3.

Cu 21: Dn 1,68 lt hn hp kh X gm hai hirocacbon vo bnh ng dung dch brom (d). Sau khiphn ng xy ra hon ton, c 4 gam brom phn ng v cn li 1,12 lt kh. Nu t chy hon ton1,68 lt X th sinh ra 2,8 lt kh CO2. Cng thc phn t ca hai hirocacbon l (bit cc th tch kh uo ktc)



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A. CH4 v C2H4. B. CH4 v C3H4. C. CH4 v C3H6. D. C2H6 v C3H6.Cu 22: Axit cacboxylic no, mch h X c cng thc thc nghim (C3H4O3)n, vy cng thc phn t caX l

A. C6H8O6. B. C3H4O3. C. C12H16O12. D. C9H12O9.Cu 23: Cho cn bng ho hc: N2(k) + 3H2(k) 2NH3(k) ; phn ng thun l phn ng to nhit. Cn

bng ho hc khngb chuyn dch khi

A. thay i p sut ca h. B. thay i nng N2.C. thay i nhit . D. thm cht xc tc Fe.Cu 24: Cho 1,9 gam hn hp mui cacbonat v hirocacbonat ca kim loi kim M tc dng ht vidung dch HCl (d), sinh ra 0,448 lt kh ( ktc). Kim loi M l

A.Na. B. K. C. Rb. D. Li.Cu 25: Th tch dung dch HNO3 67,5% (khi lng ring l 1,5 g/ml) cn dng tc dng vixenluloz to thnh 89,1 kg xenluloz trinitrat l (bit lng HNO3 b hao ht l 20 %)

A. 55 lt. B. 81 lt. C. 49 lt. D. 70 lt.Cu 26: Cho m gam hn hp X gm Al, Cu vo dung dch HCl (d), sau khi kt thc phn ng sinh ra3,36 lt kh ( ktc). Nu cho m gam hn hp X trn vo mt lng d axit nitric (c, ngui), sau khi ktthc phn ng sinh ra 6,72 lt kh NO2 (sn phm kh duy nht, ktc). Gi tr ca m l

A. 11,5. B. 10,5. C. 12,3. D. 15,6.Cu 27: Hp cht hu c no, a chc X c cng thc phn t C7H12O4. Cho 0,1 mol X tc dng va vi 100 gam dung dch NaOH 8% thu c cht hu c Y v 17,8 gam hn hp mui. Cng thc cu tothu gn ca X l

A. CH3OOC(CH2)2COOC2H5. B. CH3COO(CH2)2COOC2H5.C. CH3COO(CH2)2OOCC2H5. D. CH3OOCCH2COOC3H7.

Cu 28: Trn 100 ml dung dch c pH = 1 gm HCl v HNO3 vi 100 ml dung dch NaOH nng a(mol/l) thu c 200 ml dung dch c pH = 12. Gi tr ca a l (bit trong mi dung dch [H+][OH-] = 10-14)

A. 0,15. B. 0,30. C. 0,03. D. 0,12.Cu 29: Cho 3,6 gam axit cacboxylic no, n chc X tc dng hon ton vi 500 ml dung dch gmKOH 0,12M v NaOH 0,12M. C cn dung dch thu c 8,28 gam hn hp cht rn khan. Cng thc

phn t ca X lA. C2H5COOH. B. CH3COOH. C. HCOOH. D. C3H7COOH.

Cu 30: Cht phn ng vi dung dch FeCl3 cho kt ta lA. CH3NH2. B. CH3COOCH3. C. CH3OH. D. CH3COOH.

Cu 31: Cho cc phn ng sau:H2S + O2 (d)

ot Kh X + H2O

NH3 + O2 PtCo ,850 Kh Y + H2O

NH4HCO3 + HCl long Kh Z + NH4Cl + H2OCc kh X, Y, Z thu c ln lt l:

A. SO3, NO, NH3. B. SO2, N2, NH3. C. SO2, NO, CO2. D. SO3, N2, CO2.Cu 32:Nhit phn hon ton 40 gam mt loi qung lmit c ln tp cht tr sinh ra 8,96 lt kh CO2( ktc). Thnh phn phn trm v khi lng ca CaCO3.MgCO3 trong loi qung nu trn l

A. 40%. B. 50%. C. 84%. D. 92%.Cu 33: Cho cc phn ng:HBr + C2H5OH

ot

C2H4 + Br2 C2H4 + HBr C2H6Br2 mol)1:(1askt

S phn ng to ra C2H5Br l

A. 4. B. 3. C. 2. D. 1.Cu 34: Tin hnh hai th nghim sau:- Th nghim 1: Cho m gam bt Fe (d) vo V1 lt dung dch Cu(NO3)2 1M;- Th nghim 2: Cho m gam bt Fe (d) vo V2 lt dung dch AgNO3 0,1M.



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Sau khi cc phn ng xy ra hon ton, khi lng cht rn thu c hai th nghim u bng nhau. Gitr ca V1 so vi V2 l

A. V1 = V2. B. V1 = 10V2. C. V1 = 5V2. D. V1 = 2V2.Cu 35: Polime c cu trc mng khng gian (mng li) l

A. PE. B. amilopectin. C. PVC. D. nha bakelit.Cu 36: Cng thc phn t ca hp cht kh to bi nguyn t R v hiro l RH3. Trong oxit m R

c ho tr cao nht th oxi chim 74,07% v khi lng. Nguyn t R lA. S. B. As. C.N. D. P.Cu 37: nh hng ca nhm -OH n gc C6H5- trong phn t phenol th hin qua phn ng gia

phenol viA. dung dch NaOH. B.Na kim loi. C. nc Br2. D. H2 (Ni, nung nng).

Cu 38: Hirocacbon mch h X trong phn t ch cha lin kt v c hai nguyn t cacbon bc batrong mt phn t. t chy hon ton 1 th tch X sinh ra 6 th tch CO2 ( cng iu kin nhit , psut). Khi cho X tc dng vi Cl2 (theo t l s mol 1 : 1), s dn xut monoclo ti a sinh ra l

A. 3. B. 4. C. 2. D. 5.Cu 39: X phng ho hon ton 17,24 gam cht bo cn va 0,06 mol NaOH. C cn dung dch sau

phn ng thu c khi lng x phng l

A. 17,80 gam. B. 18,24 gam. C. 16,68 gam. D. 18,38 gam.Cu 40: Cho dy cc cht: C2H2, HCHO, HCOOH, CH3CHO, (CH3)2CO, C12H22O11 (mantoz). S chttrong dy tham gia c phn ng trng gng l

A. 3. B. 6. C. 5. D. 4.Cu 41: Cho 0,1 mol P2O5 vo dung dch cha 0,35 mol KOH. Dung dch thu c c cc cht:

A. K3PO4, K2HPO4. B. K2HPO4, KH2PO4. C. K3PO4, KOH. D. H3PO4, KH2PO4.Cu 42: Khi t chy hon ton mt este no, n chc th s mol CO 2 sinh ra bng s mol O2 phnng. Tn gi ca este l

A. metyl fomiat. B. etyl axetat. C. n-propyl axetat. D. metyl axetat.Cu 43: Cho cht hu c X c cng thc phn t C2H8O3N2 tc dng vi dung dch NaOH, thu c chthu c n chc Y v cc cht v c. Khi lng phn t (theo vC) ca Y l

A. 85. B. 68. C. 45. D. 46.Cu 44: Hn hp rn X gm Al, Fe2O3 v Cu c s mol bng nhau. Hn hp X tan hon ton trong dungdch

A.NaOH (d). B. HCl (d). C. AgNO3 (d). D.NH3(d).

PHN RING__________Th sinh ch c lm 1 trong 2 phn: phn I hoc phn II__________Phn I. Theo chng trnh KHNG phn ban (6 cu, t cu 45 n cu 50):Cu 45: Cho dy cc cht: CH4, C2H2, C2H4, C2H5OH, CH2=CH-COOH, C6H5NH2 (anilin), C6H5OH(phenol), C6H6 (benzen). S cht trong dy phn ng c vi nc brom l

A. 6. B. 8. C. 7. D. 5.

Cu 46: Th tch dung dch HNO3 1M (long) t nht cn dng ho tan hon ton mt hn hp gm0,15 mol Fe v 0,15 mol Cu l (bit phn ng to cht kh duy nht l NO)A. 1,0 lt. B. 0,6 lt. C. 0,8 lt. D. 1,2 lt.

Cu 47: Cho cc phn ng:(1) O3 + dung dch KI (2) F2 + H2O

ot

(3) MnO2 + HCl c ot

(4) Cl2 + dung dch H2S Cc phn ng to ra n cht l:

A. (1), (2), (3). B. (1), (3), (4). C. (2), (3), (4). D. (1), (2), (4).Cu 48: t chy hon ton 1 lt hn hp kh gm C2H2 v hirocacbon X sinh ra 2 lt kh CO2 v 2 lthi H2O (cc th tch kh v hi o cng iu kin nhit , p sut). Cng thc phn t ca X l

A. C2H6. B. C2H4. C. CH4. D. C3H8.Cu 49: Ba hirocacbon X, Y, Z l ng ng k tip, khi lng phn t ca Z bng 2 ln khi lng

phn t ca X. Cc cht X, Y, Z thuc dy ng ng



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A. ankan. B. ankaien. C. anken. D. ankin.Cu 50: Tin hnh bn th nghim sau:- Th nghim 1: Nhng thanh Fe vo dung dch FeCl3;- Th nghim 2: Nhng thanh Fe vo dung dch CuSO4;- Th nghim 3: Nhng thanh Cu vo dung dch FeCl3;- Th nghim 4: Cho thanh Fe tip xc vi thanh Cu ri nhng vo dung dch HCl.

S trng hp xut hin n mn in ho lA. 1. B. 2. C. 4. D. 3.

Phn II. Theo chng trnh phn ban (6 cu, t cu 51 n cu 56):Cu 51: Mui C6H5N2+Cl- (phenyliazoni clorua) c sinh ra khi cho C6H5-NH2 (anilin) tc dng vi

NaNO2 trong dung dch HCl nhit thp (0-5oC). iu ch c 14,05 gam C6H5N2+Cl- (vi hiusut 100%), lng C6H5-NH2 v NaNO2 cn dng va l

A. 0,1 mol v 0,4 mol. B. 0,1 mol v 0,2 mol. C. 0,1 mol v 0,1 mol. D. 0,1 mol v 0,3 mol.Cu 52: Cho cc dung dch: HCl, NaOH c, NH3, KCl. S dung dch phn ng c vi Cu(OH)2 l

A. 1. B. 3. C. 2. D. 4.Cu 53: Hi thu ngn rt c, bi vy khi lm v nhit k thu ngn th cht bt c dng rc ln

thu ngn ri gom li lA. vi sng. B. ct. C. mui n. D. lu hunh.

Cu 54: Ba cht hu c mch h X, Y, Z c cng cng thc phn t C 3H6O v c cc tnh cht: X, Z uphn ng vi nc brom; X, Y, Z u phn ng vi H2 nhng ch c Z khng b thay i nhm chc; chtY ch tc dng vi brom khi c mt CH3COOH. Cc cht X, Y, Z ln lt l:

A. C2H5CHO, CH2=CH-O-CH3, (CH3)2CO. B. (CH3)2CO, C2H5CHO, CH2=CH-CH2OH.C. C2H5CHO, (CH3)2CO, CH2=CH-CH2OH. D. CH2=CH-CH2OH, C2H5CHO, (CH3)2CO.

Cu 55: Cho sut in ng chun Eo ca cc pin in ho: Eo(Cu-X) = 0,46V ; Eo(Y-Cu) = 1,1V ; Eo(Z-Cu) = 0,47V (X, Y, Z l ba kim loi). Dy cc kim loi xp theo chiu tng dn tnh kh t tri sang phi l

A. Z, Y, Cu, X. B. X, Cu, Z, Y. C. Y, Z, Cu, X. D. X, Cu, Y, Z.Cu 56: Cho mt lng bt Zn vo dung dch X gm FeCl2 v CuCl2. Khi lng cht rn sau khi cc

phn ng xy ra hon ton nh hn khi lng bt Zn ban u l 0,5 gam. C cn phn dung dch sauphn ng thu c 13,6 gam mui khan. Tng khi lng cc mui trong X l

A. 13,1 gam. B. 17,0 gam. C. 19,5 gam. D. 14,1 gam.-----------------------------------------------

----------- HT ----------

B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2008P N CHNH THC Mn thi: HA HC, khi B


M thi 195

---------------------------

P N

Cu 1 2 3 4 5 6 7 8 9 100 D C A C D A A B B D1 B A B D B B A B D D2 C A D A D C C D B A3 C D B A D C C C A D4 B A C B D C A A C B5 C B D C B A - - - -



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B GIO DC V O TO THI TUYN SINH I HC, CAO NG NM 2009 CHNH THC Mn thi: HA HC, khi A



Cho bit khi lng nguyn t (theo vC) ca cc nguyn t:H = 1; C = 12; N = 14; O = 16; Na = 23; Mg = 24; Al = 27; S = 32; Cl = 35,5; K = 39; Ca = 40; Cr = 52;Mn = 55; Fe = 56; Cu = 64; Zn = 65; Br = 80; Ag = 108; Sn = 119; Ba = 137; Pb = 207.

I. PHN CHUNG CHO TT C TH SINH (40 cu, t cu 1 n cu 40)

Cu 1: Dy cc kim loi u c th c iu ch bng phng php in phn dung dch mui cachng l:

A. Fe, Cu, Ag. B. Mg, Zn, Cu. C. Al, Fe, Cr. D. Ba, Ag, Au.

Cu 2: Ho tan ht m gam ZnSO4 vo nc c dung dch X. Cho 110 ml dung dch KOH 2M vo X,thu c a gam kt ta. Mt khc, nu cho 140 ml dung dch KOH 2M vo X th cng thu c a gam ktta. Gi tr ca m l

A. 20,125. B. 22,540. C. 12,375. D. 17,710.

Cu 3: Cho hn hp kh X gm HCHO v H2 i qua ng s ng bt Ni nung nng. Sau khi phn ngxy ra hon ton, thu c hn hp kh Y gm hai cht hu c. t chy ht Y th thu c 11,7 gamH2O v 7,84 lt kh CO2 ( ktc). Phn trm theo th tch ca H2 trong X l

A. 46,15%. B. 35,00%. C. 53,85%. D. 65,00%.

Cu 4: Cho 0,448 lt kh CO2 ( ktc) hp th ht vo 100 ml dung dch cha hn hp NaOH 0,06M vBa(OH)2 0,12M, thu c m gam kt ta. Gi tr ca m l

A. 1,182. B. 3,940. C. 1,970. D. 2,364.

Cu 5: Cho bn hn hp, mi hn hp gm hai cht rn c s mol bng nhau: Na2O v Al2O3; Cu vFeCl3; BaCl2 v CuSO4; Ba v NaHCO3. S hn hp c th tan hon ton trong nc (d) ch to ra dungdch l

A. 3. B. 2. C. 1. D. 4.Cu 6: Hirocacbon X khng lm mt mu dung dch brom nhit thng. Tn gi ca X l

A. xiclohexan. B. xiclopropan. C. stiren. D. etilen.

Cu 7:Nu cho 1 mol mi cht: CaOCl2, KMnO4, K2Cr2O7, MnO2 ln lt phn ng vi lng d dungdch HCl c, cht to ra lng kh Cl2 nhiu nht l

A. KMnO4. B. MnO2. C. CaOCl2. D. K2Cr2O7.

Cu 8: Dy gm cc cht u tc dng c vi dung dch HCl long l:A. KNO3, CaCO3, Fe(OH)3. B. FeS, BaSO4, KOH.C. AgNO3, (NH4)2CO3, CuS. D. Mg(HCO3)2, HCOONa, CuO.

Cu 9: Cho 3,024 gam mt kim loi M tan ht trong dung dch HNO 3 long, thu c 940,8 ml kh NxOy

(sn phm kh duy nht, ktc) c t khi i vi H2 bng 22. Kh NxOy v kim loi M lA.NO v Mg. B.NO2 v Al. C.N2O v Al. D.N2O v Fe.

Cu 10: Cho hn hp X gm hai ancol a chc, mch h, thuc cng dy ng ng. t chy hon tonhn hp X, thu c CO2 v H2O c t l mol tng ng l 3 : 4. Hai ancol l



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A. C3H5(OH)3 v C4H7(OH)3. B. C2H5OH v C4H9OH.C. C2H4(OH)2 v C4H8(OH)2. D. C2H4(OH)2 v C3H6(OH)2.

Cu 11: X phng ho hon ton 1,99 gam hn hp hai este bng dung dch NaOH thu c 2,05 gammui ca mt axit cacboxylic v 0,94 gam hn hp hai ancol l ng ng k tip nhau. Cng thc cahai este l

A. CH3COOCH3 v CH3COOC2H5. B. C2H5COOCH3 v C2H5COOC2H5.

C. CH3COOC2H5 v CH3COOC3H7. D. HCOOCH3 v HCOOC2H5.



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Cu 12:Nguyn t ca nguyn t X c cu hnh electron lp ngoi cng l ns2np4. Trong hp cht khca nguyn t X vi hiro, X chim 94,12% khi lng. Phn trm khi lng ca nguyn t X trongoxit cao nht l

A. 50,00%. B. 27,27%. C. 60,00%. D. 40,00%.

Cu 13: Mt hp cht X cha ba nguyn t C, H, O c t l khi lng m C : mH : mO = 21 : 2 : 4. Hpcht X c cng thc n gin nht trng vi cng thc phn t. S ng phn cu to thuc loi hp chtthm ng vi cng thc phn t ca X l

A. 3. B. 6. C. 4. D. 5.

Cu 14: Cho 1 mol amino axit X phn ng vi dung dch HCl (d), thu c m1 gam mui Y. Cng 1mol amino axit X phn ng vi dung dch NaOH (d), thu c m2 gam mui Z. Bit m 2 - m1 = 7,5.Cng thc phn t ca X l

A. C5H9O4N. B. C4H10O2N2. C. C5H11O2N. D. C4H8O4N2.Cu 15: Cho phng trnh ho hc: Fe3O4 + HNO3 Fe(NO3)3 + NxOy + H2O

Sau khi cn bng phng trnh ho hc trn vi h s ca cc cht l nhng s nguyn, ti gin th h sca HNO3 l

A. 13x - 9y. B. 46x - 18y. C. 45x - 18y. D. 23x - 9y.

Cu 16: Cho lung kh CO (d) i qua 9,1 gam hn hp gm CuO v Al2O3 nung nng n khi phn nghon ton, thu c 8,3 gam cht rn. Khi lng CuO c trong hn hp ban u l


Cu 17:Nung 6,58 gam Cu(NO3)2 trong bnh kn khng cha khng kh, sau mt thi gian thu c 4,96gam cht rn v hn hp kh X. Hp th hon ton X vo nc c 300 ml dung dch Y. Dung dchY c pH bng

A. 4. B. 2. C. 1. D. 3.

Cu 18: Cho 10 gam amin n chc X phn ng hon ton vi HCl (d), thu c 15 gam mui. Sng phn cu to ca X l

A. 4. B. 8. C. 5. D. 7.

Cu 19: Khi t chy hon ton m gam hn hp hai ancol no, n chc, mch h thu c V lt kh CO 2( ktc) v a gam H2O. Biu thc lin h gia m, a v V l:

A. m = 2a 4,22

V. B. m = 2a

2,11

V. C. m = a +

6,5

V. D. m = a

6,5

V.

Cu 20: Thuc th c dng phn bit Gly-Ala-Gly vi Gly-Ala lA. dung dch NaOH. B. dung dch NaCl.C. Cu(OH)2 trong mi trng kim. D. dung dch HCl.

Cu 21: Cho 3,68 gam hn hp gm Al v Zn tc dng vi mt lng va dung dch H 2SO4 10%, thuc 2,24 lt kh H2 ( ktc). Khi lng dung dch thu c sau phn ng l


Cu 22: Dung dch X cha hn hp gm Na2CO3 1,5M v KHCO3 1M. Nh t t tng git cho n ht200 ml dung dch HCl 1M vo 100 ml dung dch X, sinh ra V lt kh ( ktc). Gi tr ca V l

A. 4,48. B. 3,36. C. 2,24. D. 1,12.

Cu 23: Hp cht hu c X tc dng c vi dung dch NaOH v dung dch brom nhng khng tcdng vi dung dch NaHCO3. Tn gi ca X l

A. anilin. B.phenol. C. axit acrylic. D. metyl axetat.

Cu 24: Cho cc hp kim sau: Cu-Fe (I); Zn-Fe (II); Fe-C (III); Sn-Fe (IV). Khi tip xc vi dung dchcht in li th cc hp kim m trong Fe u b n mn trc l:

A. I, II v IV. B. I, II v III. C. I, III v IV. D. II, III v IV.

Cu 25: Cho 6,72 gam Fe vo 400 ml dung dch HNO3 1M, n khi phn ng xy ra hon ton, thu c

kh NO (sn phm kh duy nht) v dung dch X. Dung dch X c th ho tan ti a m gam Cu. Gi trca m l

A. 1,92. B. 3,20. C. 0,64. D. 3,84.



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Cu 26: Cho dy cc cht v ion: Zn, S, FeO, SO2, N2, HCl, Cu2+, Cl-. S cht v ion c c tnh oxi hav tnh kh l

A. 7. B. 5. C. 4. D. 6.

Cu 27: Dy gm cc cht u iu ch trc tip (bng mt phn ng) to ra anehit axetic l:A. CH3COOH, C2H2, C2H4. B. C2H5OH, C2H4, C2H2.C. C2H5OH, C2H2, CH3COOC2H5. D. HCOOC2H3, C2H2, CH3COOH.

Cu 28: Ln men m gam glucoz vi hiu sut 90%, lng kh CO2 sinh ra hp th ht vo dung dchnc vi trong, thu c 10 gam kt ta. Khi lng dung dch sau phn ng gim 3,4 gam so vi khilng dung dch nc vi trong ban u. Gi tr ca m l

A. 20,0. B. 30,0. C. 13,5. D. 15,0.

Cu 29: Poli(metyl metacrylat) v nilon-6 c to thnh t cc monome tng ng lA. CH2=CH-COOCH3 v H2N-[CH2]6-COOH.B. CH2=C(CH3)-COOCH3 v H2N-[CH2]6-COOH.C. CH3-COO-CH=CH2 v H2N-[CH2]5-COOH.D. CH2=C(CH3)-COOCH3 v H2N-[CH2]5-COOH.

Cu 30: Hn hp kh X gm anken M v ankin N c cng s nguyn t cacbon trong phn t. Hn hp

X c khi lng 12,4 gam v th tch 6,72 lt ( ktc). S mol, cng thc phn t ca M v N ln lt lA. 0,1 mol C2H4 v 0,2 mol C2H2. B. 0,2 mol C2H4 v 0,1 mol C2H2.C. 0,1 mol C3H6 v 0,2 mol C3H4. D. 0,2 mol C3H6 v 0,1 mol C3H4.

Cu 31: Cho hn hp gm Fe v Zn vo dung dch AgNO3 n khi cc phn ng xy ra hon ton, thuc dung dch X gm hai mui v cht rn Y gm hai kim loi. Hai mui trong X l

A. Fe(NO3)3 v Zn(NO3)2. B. Zn(NO3)2 v Fe(NO3)2.C. AgNO3 v Zn(NO3)2. D. Fe(NO3)2 v AgNO3.

Cu 32: Ho tan hon ton 12,42 gam Al bng dung dch HNO3 long (d), thu c dung dch X v1,344 lt ( ktc) hn hp kh Y gm hai kh l N2O v N2. T khi ca hn hp kh Y so vi kh H2 l 18.C cn dung dch X, thu c m gam cht rn khan. Gi tr ca m l

A. 38,34. B. 34,08. C. 106,38. D. 97,98.Cu 33: un nng hn hp hai ancol n chc, mch h vi H2SO4 c, thu c hn hp gm cc ete.Ly 7,2 gam mt trong cc ete em t chy hon ton, thu c 8,96 lt kh CO2 ( ktc) v 7,2 gamH2O. Hai ancol l

A. C2H5OH v CH2=CH-CH2-OH. B. C2H5OH v CH3OH.C. CH3OH v C3H7OH. D. CH3OH v CH2=CH-CH2-OH.

Cu 34: C ba dung dch: amoni hirocacbonat, natri aluminat, natri phenolat v ba cht lng: ancoletylic, benzen, anilin ng trong su ng nghim ring bit. Nu ch dng mt thuc th duy nht l dungdch HCl th nhn bit c ti a bao nhiu ng nghim?

A. 5. B. 6. C. 3. D. 4.

Cu 35: Cho hn hp gm 1,12 gam Fe v 1,92 gam Cu vo 400 ml dung dch cha hn hp gm H 2SO40,5M v NaNO3 0,2M. Sau khi cc phn ng xy ra hon ton, thu c dung dch X v kh NO (snphm kh duy nht). Cho V ml dung dch NaOH 1M vo dung dch X th lng kt ta thu c l lnnht. Gi tr ti thiu ca V l

A. 360. B. 240. C. 400. D. 120.

Cu 36: Cu hnh electron ca ion X2+ l 1s22s22p63s23p63d6. Trong bng tun hon cc nguyn t hohc, nguyn t X thuc

A. chu k 4, nhm VIIIA. B. chu k 4, nhm IIA.C. chu k 3, nhm VIB. D. chu k 4, nhm VIIIB.

Cu 37: Cho 0,25 mol mt anehit mch h X phn ng vi lng d dung dch AgNO 3 trong NH3, thuc 54 gam Ag. Mt khc, khi cho X phn ng vi H 2 d (xc tc Ni, to) th 0,125 mol X phn ng htvi 0,25 mol H2. Cht X c cng thc ng vi cng thc chung l

A. CnH2n(CHO)2 (n 0). B. CnH2n+1CHO (n 0).C. CnH2n-1CHO (n 2). D. CnH2n-3CHO (n 2).



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Cu 38: Trng hp no sau y khng xy ra phn ng ho hc?A. Sc kh Cl2 vo dung dch FeCl2. B. Sc kh H2S vo dung dch CuCl2.C. Sc kh H2S vo dung dch FeCl2. D. Cho Fe vo dung dch H2SO4 long, ngui.

Cu 39: X phng ha hon ton 66,6 gam hn hp hai este HCOOC2H5 v CH3COOCH3 bng dungdch NaOH, thu c hn hp X gm hai ancol. un nng hn hp X vi H 2SO4 c 140oC, sau khi

phn ng xy ra hon ton thu c m gam nc. Gi tr ca m lA. 4,05. B. 8,10. C. 18,00. D. 16,20.

Cu 40: X phng ho mt hp cht c cng thc phn t C10H14O6 trong dung dch NaOH (d), thuc glixerol v hn hp gm ba mui (khng c ng phn hnh hc). Cng thc ca ba mui l:

A. CH2=CH-COONa, CH3-CH2-COONa v HCOONa.B. HCOONa, CHC-COONa v CH3-CH2-COONa.C. CH2=CH-COONa, HCOONa v CHC-COONa.D. CH3-COONa, HCOONa v CH3-CH=CH-COONa.

_________________________________________________________________________________

II. PHN RING [10 cu]

Th sinh ch c lm mt trong hai phn (phn A hoc B)A. Theo chng trnh Chun (10 cu, t cu 41 n cu 50)

Cu 41: C nm dung dch ng ring bit trong nm ng nghim: (NH 4)2SO4, FeCl2, Cr(NO3)3, K2CO3,Al(NO3)3. Cho dung dch Ba(OH)2 n d vo nm dung dch trn. Sau khi phn ng kt thc, s ngnghim c kt ta l

A. 4. B. 2. C. 5. D. 3.

Cu 42: Ho tan hon ton 14,6 gam hn hp X gm Al v Sn bng dung dch HCl (d), thu c 5,6 ltkh H2 ( ktc). Th tch kh O2 ( ktc) cn phn ng hon ton vi 14,6 gam hn hp X l

A. 2,80 lt. B. 1,68 lt. C. 4,48 lt. D. 3,92 lt.

Cu 43: t chy hon ton 0,2 mol mt ancol X no, mch h cn va 17,92 lt kh O 2 ( ktc). Mt

khc, nu cho 0,1 mol X tc dng va vi m gam Cu(OH) 2 th to thnh dung dch c mu xanh lam.Gi tr ca m v tn gi ca X tng ng l

A. 9,8 v propan-1,2-iol. B. 4,9 v propan-1,2-iol.C. 4,9 v propan-1,3-iol. D. 4,9 v glixerol.

Cu 44: Cho hn hp X gm hai axit cacboxylic no, mch khng phn nhnh. t chy hon ton 0,3mol hn hp X, thu c 11,2 lt kh CO 2 ( ktc). Nu trung ha 0,3 mol X th cn dng 500 ml dungdch NaOH 1M. Hai axit l:

A. HCOOH, HOOC-COOH. B. HCOOH, HOOC-CH2-COOH.C. HCOOH, C2H5COOH. D. HCOOH, CH3COOH.

Cu 45: Cho cc hp cht hu c: C2H2; C2H4; CH2O; CH2O2 (mch h); C3H4O2 (mch h, n chc).

Bit C3H4O2 khng lm chuyn mu qu tm m. S cht tc dng c vi dung dch AgNO3 trong NH3to ra kt ta lA. 3. B. 4. C. 5. D. 2.

Cu 46: Cacbohirat nht thit phi cha nhm chc caA. ancol. B. xeton. C. amin. D. anehit.

Cu 47: Cho hn hp gm 1,2 mol Mg v x mol Zn vo dung dch cha 2 mol Cu 2+ v 1 mol Ag+ n khicc phn ng xy ra hon ton, thu c mt dung dch cha ba ion kim loi. Trong cc gi tr sau y,gi tr no ca x tho mn trng hp trn?

A. 1,8. B. 1,5. C. 1,2. D. 2,0.

Cu 48: Hp cht X mch h c cng thc phn t l C 4H9NO2. Cho 10,3 gam X phn ng va vi

dung dch NaOH sinh ra mt cht kh Y v dung dch Z. Kh Y nng hn khng kh, lm giy qu tm mchuyn mu xanh. Dung dch Z c kh nng lm mt mu nc brom. C cn dung dch Z thu c mgam mui khan. Gi tr ca m l

A. 10,8. B. 9,4. C. 8,2. D. 9,6.



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Cu 49: Pht biu no sau y l ng?A. Phn ln cung cp nit ho hp cho cy di dng ion nitrat (NO3-) v ion amoni (NH4+).B. Amophot l hn hp cc mui (NH4)2HPO4 v KNO3.C. Phn hn hp cha nit, photpho, kali c gi chung l phn NPK.D. Phn ur c cng thc l (NH4)2CO3.

Cu 50: Cho cn bng sau trong bnh kn: 2NO2 (k) N2O4 (k).(mu nu ) (khng mu)

Bit khi h nhit ca bnh th mu nu nht dn. Phn ng thun cA. H > 0, phn ng ta nhit. B. H < 0, phn ng ta nhit.C. H > 0, phn ng thu nhit. D. H < 0, phn ng thu nhit.

B. Theo chng trnh Nng cao (10 cu, t cu 51 n cu 60)

Cu 51:Nung nng m gam PbS ngoi khng kh sau mt thi gian, thu c hn hp rn (c cha mtoxit) nng 0,95m gam. Phn trm khi lng PbS b t chy l

A. 95,00%. B. 25,31%. C. 74,69%. D. 64,68%.

Cu 52: Cho dy chuyn ho sau:Phenol +X Phenyl axetat tdu,NaOH

oY(hp cht thm)

Hai cht X, Y trong s trn ln lt l:A. axit axetic, phenol. B. anhirit axetic, phenol.C. anhirit axetic, natri phenolat. D. axit axetic, natri phenolat.

Cu 53: Mt bnh phn ng c dung tch khng i, cha hn hp kh N2 v H2 vi nng tng ng l0,3M v 0,7M. Sau khi phn ng tng hp NH3 t trng thi cn bng toC, H2 chim 50% th tch hnhp thu c. Hng s cn bng KC toC ca phn ng c gi tr l

A. 2,500. B. 3,125. C. 0,609. D. 0,500.

Cu 54: Pht biu no sau y l ng?

A. Cc ancol a chc u phn ng vi Cu(OH)2 to dung dch mu xanh lam.B. Etylamin phn ng vi axit nitr nhit thng, sinh ra bt kh.C. Benzen lm mt mu nc brom nhit thng.D. Anilin tc dng vi axit nitr khi un nng, thu c mui iazoni.

Cu 55: Dy gm cc dung dch u tham gia phn ng trng bc l:A. Glucoz, mantoz, axit fomic, anehit axetic.B. Fructoz, mantoz, glixerol, anehit axetic.C. Glucoz, glixerol, mantoz, axit fomic.D. Glucoz, fructoz, mantoz, saccaroz.

Cu 56: Cht hu c X c cng thc phn t C5H8O2. Cho 5 gam X tc dng va ht vi dung dch

NaOH, thu c mt hp cht hu c khng lm mt mu nc brom v 3,4 gam mt mui. Cng thcca X lA. HCOOC(CH3)=CHCH3. B. CH3COOC(CH3)=CH2.C. HCOOCH2CH=CHCH3. D. HCOOCH=CHCH2CH3.

Cu 57: Cho s chuyn ha:CH3CH2Cl KCN X

+ otOH ,3 Y

Cng thc cu to ca X, Y ln lt l:A. CH3CH2NH2, CH3CH2COOH. B. CH3CH2CN, CH3CH2COOH.C. CH3CH2CN, CH3CH2CHO. D. CH3CH2CN, CH3CH2COONH4.

Cu 58: Cho sut in ng chun ca cc pin in ho: Zn-Cu l 1,1V; Cu-Ag l 0,46V. Bit th in

cc chun Eo

(Ag+

/Ag) = +0,8V. Th in cc chun Eo

(Zn2+

/Zn) v Eo

(Cu2+

/Cu) c gi tr ln lt lA. -0,76V v +0,34V. B. -1,46V v -0,34V. C. +1,56V v +0,64V. D. -1,56V v +0,64V.

Cu 59: Dy gm cc cht v thuc u c th gy nghin cho con ngi lA. cocain, seduxen, cafein. B. heroin, seduxen, erythromixin.



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C. ampixilin, erythromixin, cafein. D.penixilin, paradol, cocain.

Cu 60: Trng hp xy ra phn ng lA. Cu + Pb(NO3)2 (long) B. Cu + HCl (long) C. Cu + H2SO4 (long) D. Cu + HCl (long) + O2

------------------------------ HT ---------------------------



M thi 175---------------------------

P NCu 1 2 3 4 5 6 7 8 9 10

0 A A A C C A D D C C1 A D D A B D C B D C2 C D B C A B B D D D3 B C D B A D C C B A4 D D B A B A C B C B5 C C B B A A B A A D



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M thi 175

H v tn th sinh: .............................................................................S bo danh: .......................................................................................Cho bit khi lng nguyn t (theo vC) ca cc nguyn tH = 1; C = 12; N = 14; O = 16; F = 19; Na = 23; Mg = 24; Al = 27; P =31; S = 32; Cl = 35,5; K = 39;Ca = 40; Mn = 55; Fe = 56; Cu = 64; Zn =

Phương pháp giải nhanh trắc nghiêm hóa học Phần 1

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