B LUYN THI I HC CP TC 2012NGUYN THANH TUYN

NTT

THI TH I HC 2009-2010

MN :HA HC

S : 03

Cu 1 t chy hon ton m gam hn hp gm C2H4, C3H6, C4H8 thu c 1,68 lt kh CO2 (ktc). Gi tr ca m bng

A. 1,25g

B. 1,15g

C. 1,05g

D. 0,95g

Cu 2 Khi lng axit CH3COOH cn ly tc dng va vi 10,65 gam C3H7OH (phn ng c H2SO4 xc tc, un nng, gi thit hiu sut phn ng 100% ) l

A. 9,90g

B. 10,12g

C.12,65g

D. 10,65g

Cu 3 Cho 5,7 gam hn hp bt P gm Mg, Al, Zn, Cu tc dng hon ton vi oxi d thu c hn hp rn Q c khi lng l 8,1 gam. Th tch ti thiu dung dch HCl 1M cn dng ho tan hon ton Q l

A. 180 ml

B. 270 ml

C. 300 ml

D. 360 ml

Cu. 4Cho mt lng bt CaCO3 tc dng hon ton vi dung dch HCl 32,85% sau phn ng thu c dung dch X trong nng HCl cn li l 24,20%. Nng % CaCl2 trong dung dch sau phn ng

A.10,35% B.12,35% C.11,35% D. 8,54%

Cu 5 Hn hp Z gm 2 axit cacboxylic no, n chc k tip nhau trong dy ng ng. t chy hon ton hn hp Z thu c khi lng H2O t hn khi lng CO2 l 5,46 gam. Nu ly 1/2 lng hn hp Z trn cho tc dng vi dung dch NaOH va th sau phn ng thu c 3,9 gam hn hp mui khan. Cng thc 2 axit trong Z l

A. CH3COOH v C2H5COOH

B. C2H3COOH v C3H5COOH

C. C2H5COOH v C3H7COOH

D. HCOOH v CH3COOH

Cu 6 Cho mt lng ru E i vo bnh ng Na (d), sau khi phn ng xy ra hon ton thy khi lng bnh tng thm 6,3 gam v c 1,568 lt kh H2 (ktc) thot ra. Cng thc ru E l

A. C3H5(OH)3

B. C3H7OH

C. C2H4(OH)2

D. C2H5OH

Cu 7 t chy hon ton m gam mt ru no X thu c cng m gam H2O. Bit khi lng phn t ca X nh hn 100 vC. S ng phn cu to ca ru X l

A. 4

B. 6

C. 5

D. 3

Cu 8Cho cc s phn ng sau :

a) 6X Y

b) X + O2 Z

c) E + H2O G

d) E + Z F

e) F + H2O Z + G.

iu khng nh no sau y ng

A. Cc cht X, Y, Z, E, F, G u c cng s C trong phn t.

B. Ch c X v E l hirocacbon

C. Cc cht X, Y, Z, E, F, G u phn ng c vi dung dch Ag2O trong NH3.

D. Cc cht X, Y, Z, E, F, G u c nhm chc CHO trong phn t.

Cu 9Ho tan hn hp X gm Cu v Fe2O3 trong 400 ml dung dch HCl a mol/lt c dung dch Y v cn li 1 gam ng khng tan. Nhng thanh Mg vo dung dch Y, sau khi phn ng xong, nhc thanh Mg ra thy khi lng tng 4 gam so vi ban u v c 1,12 lt kh H2 (ktc) bay ra.(Gi thit ton b lng kim loi thot ra u bm vo thanh Mg). Khi lng ca Cu trong X v gi tr ca a l

A. 1,0g v a = 1M B. 4,2g v a = 1M.C. 3,2g v 2M.D. 4,8g v 2M.

Cu 10. Ho tan 14,2 gam hn hp X gm MgCO3 v mt mui cacbonat ca kim loi M vo mt lng va axit HCl 7,3% thu c dung dch Y v 3,36 lt kh CO2 (ktc). Nng MgCl2 trong Y l 6,028%. Cho dung dch NaOH d vo dung dch Y, lc ly kt ta em nung ngoi khng kh n khi lng khng i th thu c m gam chy rn. Gi tr ca m bng

A. 12,0g

B. 10,4g

C. 8,0g

D. 7,6g

D.Phi kim lun l cht oxi ho trong phn ng oxi ho - kh.

Cu 11 Ho tan hon ton 5,94g Al vo dung dch NaOH d thu c kh X. Cho 1,896g KMnO4 tc dng ht vi axit HCl c kh Y. Nhit phn hon ton 12,25g KClO3 c xc tc thu c kh Z. Cho ton b 3 kh Z, Y, Z trn vo bnh kn ri t chy phn ng xy ra hon ton, sau a bnh v nhit thng, thu c dung dch T. Nng phn trm cht tan trong T l A. 18,85% B. 28,85%

C. 24,24%D. 31,65%

Cu 12 S ng phn mch h c cng thc phn t C4H9NO2 khi phn ng vi dung dch NaOH iu kin thng to ra amoniac l

A. 2

B. 3

C. 4

D. 5

Cu 13 t chy hon ton 1,1g hn hp F gm metan, etin, propen thu c 3,52g CO2. Mt khc, khi cho 448 ml hn hp kh F (ktc) i qua dung dch nc brom d th ch c 4g brom phn ng. Phn trm th tch metan, etin, propen trong hn hp F ln lt l (%) :

A. 30 ; 40 ; 30

B. 25 ; 50 ; 25C. 50 ; 25 ; 25

D. 25 ; 25 ; 50

Cu 14 Ho tan hon ton m gam kim loi M bng dung dch HCl d thu c V lit H2 (ktc). Mt khc ho tan hon ton m gam kim loi M bng dung dch HNO3 long, d thu c mui nitrat ca M, H2O v cng V lit kh NO (ktc) duy nht. Bit khi lng mui nitrat to thnh gp 1,905 ln khi lng mui clorua. Kim loi M l

A. Mg

B. Al

C. Cu

D. Fe

Cu 15. C 50 ml dung dch cha hn hp KOH 0,05M v Ba(OH)2 0,025M ngi ta thm V ml dung dch HCl 0,16M vo 50 ml dung dch trn thu c dung dch mi c pH = 2. Vy gi tr ca V l

A. 36,67 ml

B. 30,33 ml

C. 40,45 ml

D. 45,67 ml.

Cu 16. t chy hon ton 1,35 gam mt ru no Y c mch cacbon khng phn nhnh ri cho ton b sn phm chy hp th ht vo bnh ng lng d dung dch Ba(OH)2 thy khi lng bnh tng thm a gam v c 11,82 gam kt ta trng. Cng thc phn t ru Y l

A. C4H9OH

B. C3H6(OH)2C. C4H8(OH)2

D. C3H5(OH)3

Cu 17. T cc s phn ng sau :

a)X1 + X2 Ca(OH)2 + H2 b) X3 + X4 CaCO3 + Na2CO3 + H2O

c) X3 + X5 Fe(OH)3 + NaCl + CO2 d) X6 + X7 + X2 Al(OH)3 + NH3 + NaCl

Cc cht thch hp vi X2, X3, X4, X5 tng ng l

A. Ca ; NaOH ; Ca(HCO3)2 ; FeCl3

B. H2O ; Ca(HCO3)2 ; NaOH ; FeCl3C. H2O ; NaHCO3 ; Ca(OH)2 ; FeCl3

D. Ca ; Ca(OH)2 ; NaHCO3 ; FeCl3

Cu 18. Mt hn hp gm 2 este n chc X, Y c khi lng 32,6 gam. Chia hn hp trn thnh 2 phn u nhau. X phng ho hon ton phn 1 bng mt lng va 125 ml dung dch NaOH 2M un nng, thu c 1 ru v 2 mui.Cho phn 2 tc dng vi lng d dung dch Ag2O trong NH3 thu c 43,2 gam Ag. Khi lng v cng thc ca cc este X, Y c trong hn hp ban u ln lt l:

A.24gamHCOOCH3 v 8,6 gamC2H3COOCH3 B. 24gam HCOOCH3 v 8,6 gam C2H5COOCH3

C.12 gamHCOOCH3v20,6gamC2H3COOCH3 D.12gam HCOOCH3 v 20,6 gam CH3COOCH3

Cu 19. iu khng nh no sau y ng ?

A. Cacbon ch c tnh kh.

B. Cacbon ioxit khng th b oxi ho.

C. Cacbon oxit l cht kh khng th t chy.D. Khng th t chy kim cng.

Cu 20 Pht biu no sau y lun ng:

A.Mt cht c tnh oxi ho gp mt cht c tnh kh, nht thit xy ra phn ng oxi ho - kh.

B.Mt cht hoc ch c tnh oxi ho hoc ch c tnh kh.

C.Phn ng c kim loi tham gia l phn ng oxi ho - kh.

D.Phi kim lun l cht oxi ho trong phn ng oxi ho - kh.

Cu 21. X v Y l 2 nguyn t nm trong 2 phn nhm chnh k tip nhau trong bng tun hon dng ngn, X thuc nhm VI. Tng s ht proton trong 2 ht nhn ca X v Y l 25 ( ZX < ZY ) . Bit n cht X tc dng c vi n cht Y. Vy X, Y tng ng l

A. Ne v P.B. O v Cl

C. F v S

D. N v Ar

Cu 22. Cho phn ng N2 + 3H2 2NH3 . Khi cn bng c thit lp, ta c nng cn bng ca cc cht nh sau : [N2] = 3 mol/l, [H2] = 9 mol/l, [NH3] = 4 mol/l. Vy nng ban u ca N2 v H2 l

A. [N2] = 7 mol/l, [H2] = 12 mol/l

B. [N2] = 5 mol/l, [H2] = 15 mol/l

C. [N2] = 5 mol/l, [H2] = 12 mol/l

D. [N2] = 9 mol/l, [H2] = 15 mol/l

Cu 23. Cho 200 ml dung dch X cha cc ion NH4+ , K+ , SO42- , Cl- vi nng tng ng l 0,5M , 0,1M , 0,25M , 0,1M. Bit rng dung dch X c iu ch bng cch ho tan 2 mui vo nc. Khi lng ca 2 mui c ly l

A. 6,6g (NH4)2SO4 v 7,45g KCl.

B. 6,6g (NH4)2SO4 v 1,49g KCl.

C. 8,7g K2SO4 v 5,35g NH4Cl.

D. 3,48g K2SO4 v 1,07g NH4Cl.

Cu 24. Nung 44 gam hn hp X gm Cu v Cu(NO3)2 trong bnh kn cho n khi cc phn ng xy ra hon ton thu c cht rn Y. Cht rn Y phn ng va vi 600 ml dung dch H2SO4 0,5 M (Y tan ht). Khi lng Cu v Cu(NO3)2 c trong hn hp X l ( Cu = 64, N = 14, O = 16, S = 32, H = 1) : A. 6,4 g Cu; 37,6 g Cu(NO3)2 B. 9,6 g Cu; 34,4 g Cu(NO3)2C. 8,8 g Cu; 35,2 g Cu(NO3)2 D. 12,4 g Cu; 31,6 g Cu(NO3)2

Cu 25. t chy 1,12 lit (ktc) hn hp hai hirocacbon X,Y ng ng lin tip (MX < MY), ta thu c 2,88 gam nc v 4,84 gam CO2. Thnh phn % theo th tch ca hai hirocacbon X,Y trong hn hp l: A. 50; 50 B. 20; 80 C. 33,33 ; 66,67 D. 80 , 20.

Cu 26. tch butin-1 ra khi hn hp vi butin-2 , nn

A. dng phng php chng ct phn on. B. dng dung dch brom.

C. dng dung dch AgNO3/NH3, sau dng dung dch HCl. D. dng dung dch KMnO4.

Cu 27. Hirocacbon X tc dng vi brom trong iu kin thch hp, thu c ch mt dn xut brom c t khi hi so vi hiro bng 75,5 ( Br = 80). Cht X l

A. pentan. B. xiclopentan. C. 2- metylbutan. D. 2,2-imetylpropan.

Cu 28. Dn hai lung kh clo i qua hai dung dch KOH: dung dch I long v ngui, dung dch II m c, un nng ti 80oC. Nu lng mui KCl sinh ra trong hai dung dch bng nhau th t l th tch kh clo i qua hai dung dch KOH ( I ) v ( II ) l : (Cho : K = 39, Cl = 35,5)

A. 5/6 B. 6/3 C. 10/3 D. 5/3

Cu 29. Hai bnh A, B c th tch bng nhau. Bnh A cha 1 mol kh Cl2, bnh B cha 1 mol kh O2. Cho vo mi bnh 2,4 gam bt kim loi M c ho tr khng i. un nng 2 bnh cc phn ng xy ra hon ton ri a 2 bnh v nhit ban u, nhn thy p sut kh trong 2 bnh PA : PB = 1,8 : 1,9. Kim loi M l

A. Zn

B. Ca

C. Mg

D. Ba

Cu 30. Cho cc cht Cu, FeO, Fe3O4, C, FeCO3, Fe(OH)2, Fe tc dng ln lt vi H2SO4 c, nng u gii phng kh SO2. Nhm cc cht m khi tc dng vi 1 mol H2SO4 u gii phng ra 1/ 4 mol SO2 gm

A. Cu, FeO, Fe3O4 B. FeO, Fe3O4, C. Fe3O4, FeCO3, Fe D. FeO, FeCO3, Fe(OH)2

Cu 31. Cc kim loi phn nhm chnh nhm I, II khc cc kim loi cn li ch

A. ch c chng l kim loi nh.

B. chng u phn ng vi nc to dung dch kim.

C. chng c ho tr khng i khi tham gia phn ng ho hc.

D. kh nng dn in ca chng tt hn nhm.

Cu 32. C V1 ml dung dch H2SO4 pH = 2. Trn thm V2 ml H2O vo dung dch trn c (V1+V2) ml dung dch mi c pH = 3. Vy t l V1 : V2 c gi tr bng

A. 1 : 3

B. 1 : 5

C. 1 : 9

D. 1 : 10

Cu 33. Ho tan 17 gam hn hp NaOH, KOH, Ca(OH)2 vo nc c 500 gam dung dch X. trung ho 50 gam dung dch X cn dng 40 gam dung dch HCl 3,65%. C cn dung dch sau khi trung ho thu c khi lng mui khan l

A. 3,16 gam.

B. 2,44 gam.

C. 1,58 gam.

D. 1,22 gam.

Cu 34. in phn dung dch cha hn hp 2 mui CuCl2 v Cu(NO3)3 mt thi gian, anot ca bnh in phn thot ra 448 ml hn hp kh (ktc) c t khi so vi H2 bng 25,75 v c m gam kim loi Cu bm trn catot. Gi tr ca m bng

A. 0,64 gam

B. 1,28 gam

C. 1,92 gam.

D. 2,56 gam

Cu 35. Hp cht hu c n chc X cha C, H, O. Trong phn trm khi lng ca C, H tng ng l 55,81 % v 6,98 %. Y l ng phn ca X v hu nh khng tan trong nc. C X v Y u c ng phn cis trans. Cng thc cu to ca X v Y l cng thc no sau y:

A. CH2=CHCOOH v HCOOCH=CH2.

B. B. HCOOCH=CHCH3 v CH3CH=CHCOOH

C.CH3CH=CHCOOH v HCOOCH=CHCH3

D. CH2=CHCH2COOH v CH3COOCH=CH2Cu 36. Ru no X l ng ng ca etylen glicol, c phn trm khi lng oxi bng 35,55%. X ho tan c Cu(OH)2 to dung dch mu xanh lam. S ng phn cu to tho mn tnh cht trn ca X l

A. 2

B. 3

C.4

D.5

Cu 37. t chy hon ton 1,3g cht hu c X thu c 2,24 lit CO2 (ktc) v 0,9g H2O. Bit X l cht lng v l monome dng trong tng hp cao su, iu ch polime khc X l

A. Axetilen

B. Butaien

C. Isopren

D. Stiren

Cu 38. Trung ho 0,1 mol amino axit X cn 200g dung dch NaOH 4%. C cn dung dch thu c 16,3gam mui khan. Cng thc phn t ca X l

A. H2NCH2COOH

B.H2NCH(COOH)2

C. H2NCH2CH2COOH

D. H2NCH2CH(COOH)2Cu 39. X l cht lng khng mu, khng lm i mu phenolphtalein. X tc dng c vi dung dch Na2CO3 v dung dch AgNO3/NH3. Vy X l

A. HCOOHB. HCOOCH3

C. HCHO

D. CH3COOH

Cu 40. Cho m gam hn hp 2 amino axit (trong phn t ch cha 1 nhm amino v 1 nhm cacboxyl) tc dng vi 110 ml dung dch HCl 2M c dung dch X. phn ng ht vi cc cht trong X cn dng 200 gam dung dch NaOH 8,4% c dung dch Y. C cn Y c 34,37 gam cht rn khan. Gi tr ca m l

A. 15,1 gam.

B. 16,1 gam.

C. 17,1 gam.

D. 18,1 gam.

Cu 41. Cht hu c X c t khi hi so vi metan bng 4,625. Khi t chy X thu c s mol H2O bng s mol X chy, cn s mol CO2 bng 2 ln s mol nc. X tc dng c vi Na, NaOH v Ag2O trong dung dch NH3 sinh ra Ag. Cng thc cu to ca X l A. HCOOC2H5B. C2H5COOHC. HOOC-CHOD. HOCH2CH2CHO

Cu 42. phn bit ru bc 1 vi ru bc 2 ngi ta ln lt dng ho cht sau

A. CuO(to) ; Ag2O/NH3

B. CH3COOH; NaOH

C. H2SO4c (170oC)

D. O2 (men gim)

Cu 43. im ging nhau khi sc kh CO2 ln lt vo cc dung dch nc vi trong (I), natri phenolat (II), natri aluminat (III) ; sc kh ozon vo dung dch KI (IV) ; sc kh sunfur vo dung dch H2S (V) l hin tng dung dch b vn c, nhng bn cht ca cc phn ng khc nhau nh sau :

A. (II), (III) khc vi (I), (IV), (V)

B. (I), (II), (III) khc vi (IV), (V)

C. (I), (II), khc vi (III), (IV), (V)

D. (III), (IV) khc vi (I), (II), (V)

Cu 44. Cho H2SO4 c vo saccaroz iu kin thng thu c mt cht kh bay ra c kh nng lm mt mu dung dch thuc tm .Cht l :

A. Hi H2SO4 . B. Kh CO2. C. Kh SO2 . D. Kh H2S

Cu 45. Trong cc cht: glucoz, fructoz, saccaroz, mantoz th nhng cht khng c kh nng tham gia phn ng trng gng l:

A. Glucoz v saccaroz. B. Glucoz v mantoz.

C. Saccaroz v fructoz. D. Saccaroz v mantoz.

Cu 46. Khi thu phn du thc vt xy ra phn ng mt chiu, ngoi glyxerin ta thu c ch yu :

A. Axit no. B. Axit khng no . C. Mui ca axit no

D. Mui ca axit khng no.

Cu 47. Xc tc dng trong phn ng este ho ca amino axit l :

A. H2SO4 long. B. H2SO4 c. C. HCl bo ho. D. HCl long .

Cu 48. Cc nhm cht sau y, nhm cht no thuc loi t tng hp ?

A. T nilon , t capron , t lapxan. B. T vissco , t axetat .

C. T tm , len , bng . D. T vissco , t nilon , t capron.

Cu 49. Oxi ho 4 gam ru n chc Z bng O2 (xt Cu) thu c 5,6 gam hn hp kh v hi X. Tn ca ru Z v hiu sut phn ng oxi ho l

A. C2H5OH ; 60% B. CH3OH ; 80% C. C3H7OH ; 40% D. C4H9OH ; 90%.

Cu 50. Ru bc hai X c cng thc phn t C6H14O. un X vi H2SO4 c 170oC ch to ra 1 anken duy nht, tn X l

A. 2,3-imetyl butanol-2. B. 2,3-imetyl butanol-1.

C. 2-metyl pentanol-3. D. 3,3-imetyl butanol-2.

p n

1234567891011121314151617

CDCAADBCBCBCBDACC

2122232425262728293031323334353637

CBBADCDDCDCCBCCBD

41424344454647484950181920383940

CABCCDAABDABCBAC

NTT

THI TH I HC 2009-2010

MN :HA HC

S : 04

Cu 1.Trong cc kim loi Cu, Al, Fe, Ag, Au. dn in ca kim loi c xp theo th t

A. Au, Al, Fe, Cu, Ag.

B. Au, Ag, Al, Cu, Fe.

C. Ag, Cu, Au, Al, Fe.

D Al, Ag, Au, Cu, Fe

Cu 2.Dng phng php in phn nng chy iu ch c

A. tt c cc kim loi vi tinh khit cao. B. cc kim loi hot ng trung bnh v yu.

C. ch cc kim loi hot ng mnh. D. ch cc kim loi hot ng trung bnh.

Cu 3. loi b tp cht km, ch, ng c ln trong bc ( dng bt) m khng lm thay i khi lng bc ngi ta dng mt lng d dung dch A. AgNO3. B. Pb(NO3)2. C. Cu(NO3)2. D. Fe(NO3)3.

Cu 4. Ngi ta iu ch Ba t dung dch BaCl2 bng cch

A.in phn dung dch BaCl2.

B. C cn dung dch v in phn nng chy .

C. dng kim loi K y Ba ra khi dung dch D. c cn dung dch v nhit phn BaCl2Cu 5. Trong mt cc nc c ho tan a mol Ca(HCO3)2 v b mol Mg(HCO3)2. kh cng ca nc trong cc cn dng V lt nc vi trong, nng p mol/lit. Biu thc lin h gia V vi a, b, p l

A. V = (a + b)/p. B. V = 2(a + b)/p. C. V = (a + b)/2p. D. V = (a + b) p.

Cu 6. C 5 cht bt mu trng NaCl, Na2CO3, CaCO3, Na2SO4, BaSO4 ng trong cc l ring bit khng ghi nhn. phn bit tng cht ch cn dng

A. dung dich MgCl2. B. nc v kh CO2. C. axit H2SO4 long D. dung dch BaCl2.

Cu 7. Cc kim loi phn nhm chnh nhm II tan trong nc to dung dch kim gm

A. Be, Mg, Ca. B. Be, Ca, Ba. C. Ca, Sr, Ba. D. Ca, Mg, Ba.

Cu 8. Nhm khng tan trong nc v

A. nhm khng kh c nc nhit thng. B. nhm l kim loi lng tnh.

C. trn b mt nhm lun c lp nhm oxit bo v. D. mt l do khc.

Cu 9. Nguyn liu sn xut nhm l qung boxit Al2O3.nH2O, thng c ln tp cht Fe2O3 v SiO2. lm sch nguyn liu, ho cht cn dng l

A. dung dch NaOH c. B. dung dch NaOH long.

C. dung dch HCl v kh CO2. D. dung dch NaOH c v kh CO2.

Cu 10. Cc dung dch FeSO4 (1), Fe2(SO4)3 (2), Fe(NO3)3 (3), Fe(NO3)2 (4) c axit ho bng H2SO4 long. Dung dch thuc tm khng b mt mu trong nhm dung dch no sau y :A. (2) v (3)

B. (3) v (4). C. (2) v (4). D. (1) v (2)

Cu 11. 8,4 gam bt st trong khng kh sau mt thi gian thu c m gam hn hp E gm 4 cht. Ho tan ht hn hp E bng dung dch HNO3 long, d thu c 1,12 lit kh NO duy nht (ktc). Gi tr ca m

A. 9,8 gam. B. 15,6 gam. C. 10,8 gam. D. 10,08 gam.

Cu 12. Cho t t dung dch NH3 vo dung dch ZnSO4 cho ti d NH3 thy

A. khng c hin tng g xy ra. B. xut hin kt ta v tan ngay.

C. xut hin kt ta trng khng tan. D. c kt ta trng tng dn, sau li tan ra.

Cu 13. Kh X khng mu, mi xc, c iu ch bng phn ng ca ng vi axit sunfuric c, nng. Cho X li chm qua nc brm mu vng ( bnh1) v nc hiro sunfua ( bnh 2), hin tng quan st c cc bnh 1 v bnh 2 tng ng l

A. (1) dung dch khng i mu ; (2) c kh thot ra mi trng thi.

B. (1) dung dch mt mu ; (2) c kt ta mu vng.

C. (1) dung dch mt mu ; (2) khng c hin tng g.

D. (1) dung dch khng i mu ; (2) c kt ta mu vng.

Cu 14. Hai hirocacbon X, Y c cng cng thc phn t C4H8. Khi phn ng vi brom t X thu c mt dn xut 1,2 i brom 2-metyl propan; t Y thu c mt dn xut 2,3 i brom butan . Tn ca X v Y l

A. 2-metyl propen v buten-2. B. 2-metyl propen v metyl xiclo propan

C. buten-1 v buten-2. D. buten-2 v xiclo butan.

Cu 15. Hn hp kh X gm hai hirocacbon mch h, k tip nhau trong dy ng ng. t chy hon ton 4,48 lt (ktc) kh X thu c 10,752 lt kh CO2 (ktc) v 8,64 gam H2O.Cng thc ca hai hirocacbon v phn trm th tch ca chng trong X tng ng l

A. C2H4 (60 %) v C3H6 (40 %). B. C3H6 (60 %) v C4H8 (40 %).

C. C2H4 (40 %) v C3H6 (60 %). D. C3H6 (40 %) v C4H8 (60 %).

Cu 16. un nng dung dch mantoz c axit v c lm xc tc, thu c dung dch cha

A. glucoz. B. fructoz. C. sacaroz. D. glucz v fructoz.

Cu 17. Cho cc cht sau: (1) Cu(OH)2, (2) Ag2O/NH3, (3) H2/Ni, t0, (4) H2SO4 long nng. Dung dch mantoz tc dng c vi cc cht

A. (2), (3), (4). B. (2), (4). C. (1), (2), (4). D. (3), (4).

Cu 18. Ngi ta sn xut xenluloz trinitrat t xenluloz v axit nitric ( s hao ht trong sn xut l 12 %). Khi lng xenluloz cn dng sn xut ra 1 tn xenluloz trinitrat l

A. 609,83 kg. B. 619,83 kg. C. 629,83 kg. D. 639,83 kg.

Cu 19. T s phn ng : C6H6 (X ( Y ( 2,4,6 tribrom anilin. Cht X v Y l

A. clobenzen v anilin. B. nitrobenzen v phenol.

C. nitrobenzen v anilin. D. clobenzen v phenol.

Cu 20. t chy hon ton 8,9 gam hp cht hu c E thu c 13,2 gam CO2, 6,3 gam H2O v 1,12 lt N2 (ktc). T khi hi ca E so vi hiro bng 44,5. Khi E phn ng vi dung dch NaOH un nng, sn phm thu c c metanol. Cng thc cu to ca E l

A. CH3COOCH2NH2. B. H2NCH2COOCH3.

C. CH3CH(NH2)COOCH3 D. H2NCH2CH2COOCH3

Cu 21. Cho 1,47 gam -aminoaxit Y tc dng vi NaOH d to ra 1,91 gam mui natri. Mt khc, 1,47 gam Y tc dng vi HCl d to ra 1,835 gam mui clorua.

Cng thc cu to ca Y l A. H2NCH2COOH. B. CH3CH(NH2)COOH.

C. CH3(CH2)4CH(NH2)COOH. D. HOOCCH2CH2CH(NH2)COOH.

Cu 22. Trong cc cht sau: CH3-CH=CH2, CH2(OH)CH2(OH), NH2-CH2-COOH, CH2=CHCl, nhng cht tham gia c phn ng trng ngng gm

A. HO-CH2-CH2-OH v NH2-CH2-COOH. B. HO-CH2-CH2-OH v CH3-CH=CH2.

C. CH2=CHCl v CH3-CH=CH2. D. CH3-CH=CH2 v NH2-CH2-COOH.

Cu 23. Trong s cc polime sau: si bng (1), t tm (2), len (3), t visco (4), t enang (5), t axetat (6), t nilon-6,6 (7). T thuc loi poliamit gm

A.(2), (3), (4), (6). B. (1), (2), (5). C. (1), (4), (6). D. (2), (3), (5), (7).

Cu 24. Tch nc t ru (CH3)2CHCH(OH)CH3 trong iu kin thch hp thu c anken. Sn phm tri qui tc Zai xep l sn phm no sau y

A. 2-metylbuten-1. B. 2-metylbuten-2. C. 3-metylbuten-1. D. penten-1.Cu 25. Cho 2,325 gam ru X tc dng ht vi Na thu c 0,84 lt kh H2 (ktc).Bit MX 92. Ru X l

A. etylen glycol. B. glyxerin. C. etanol. D. propanol.

Cu 26. Trong cc ng phn cha vng benzen c cng thc C7H8O s ng phn phn ng c c vi Na v NaOH l A. 2. B. 3. C. 4. D. 5.

Cu 27. Dn lung kh CO d i qua ng s cha 17,1 gam hn hp X gm Fe2O3, Al2O3, MgO n khi phn ng hon ton c cht rn Y. Ho tan Y trong dung dch NaOH d thy khi lng cht rn Z thu c bng 65,306% khi lng Y. Ho tan Z bng lng d dung dch HCl thot ra 2,24 lt kh (ktc). Khi lng cc cht trong Z ln lt l (gam)

A. 5,6g Fe ; 4,0g Mg.

B. 2,8g Fe ; 6,8g MgO

C. 5,6g Fe ; 4,0g MgO

D. 2,8g Fe ; 6,8g Mg

Cu 28. Axit cacboxilic n chc mch h G c cng thc phn t dng CnH2n -2O2. Bit rng

3,6 gam cht G phn ng va vi 8 gam brom trong dung dch. Vy cht G l

A. axit acrylic. B. axit metacrilic. C. axit oleic. D. axit linoleic.

Cu 29. Trung ho dung dch c ho tan 3,8 gam hn hp hai axit cacboxylic no, n chc k tip nhau trong dy ng ng cn dng 150 ml dung dch NaOH 0,5M. Cng thc ca hai axit l

A. HCOOH v CH3COOH. B. CH3COOH v C2H5COOH.

C. C2H5COOH v C3H7COOH. D. C3H7COOH v C4H9COOH.

Cu 30. Bn este c CTPT: C3H4O2, C3H6O2, C4H6O2, C4H8O2. Cng thc phn t ng vi 2 este khi b thu phn cho ra hai cht hu c u khng c kh nng tham gia phn ng trng gng :

A C3H4O2 v C4H8O2. B. C3H4O2 v C4H6O2.

C. C3H4O2 v C3H6O2. D. C3H6O2 v C4H8O2.

Cu 31. X phng ho hon ton 0,01 mol este E (c khi lng 8,9 gam) cn dng va lng NaOH c trong 300 ml dung dch NaOH 0,1 M thu c mt ru v 9,18 gam mui ca mt axit hu c n chc, mch h, c mch cacbon khng phn nhnh. Cng thc ca E

A. C3H5(OOCC17H35)3. B. C3H5(OOCC17H33)3.

C. C3H5(OOCC17H31)3. D. C3H5(OOCC15H31)3.

Cu 32. Ho tan hn hp ng v oxit st t ( dng bt) theo t l mol 2 : 1 bng dung dch HCl d, phn ng xong thu c dung dch X v cht rn Y. Cht tan c trong dung dch X gm

A. FeCl2 v FeCl3 B. FeCl3 C. FeCl2 D. FeCl2 v CuCl2Cu 33. Ho tan 3,84 gam mui sunfat ca hai kim loi kim X, Y (MX < MY) thuc hai chu k k tip vo nc c dung dch E. Dung dch E phn ng va vi 40 ml dung dch BaCl2 0,75 M. Hai kim loi X v Y tng ng l

A. Li v Na. B. Na v K. C. K v Rb. D. Rb v Cs.

Cu 34. in phn nng chy a gam mui halogenua ca kim loi M, thu c 1,6 gam M Catot v 0,896 lt kh (ktc) Anot. Mt khc dung dch cha a gam mui halogenua ni trn tc dng vi AgNO3 d thu c 11,48 gam kt ta. Cng thc mui halogenua l

A. Canxi florua. B. Magie clorua. C. Canxi clorua. D. Magie bromua.

Cu 35. Trn 200 ml dung dch gm HCl 0,1 mol/l v H2SO4 0,05 mol/l vi 300 ml dung dch Ba(OH)2 nng x mol/l thu c m gam kt ta v 500 ml dung dch c pH = 13,gi tr ca x v m ln lt l

A. x = 0,015 ; m = 2,33. B. x = 0,150 ; m = 2,33.

C. x = 0,200 ; m = 3,23. D. x = 0,020 ; m = 3,23.

Cu 36. Ho tan ht hn hp FeS2, FeCO3 bng dung dch HNO3 c, nng c dung dch X v 4,48 lt (ktc) hn hp kh Y c t khi so vi hiro bng 22,75. Hp th ton b kh Y vo 300 ml dung dch NaOH 1 M c dung dch Z. Cc cht tan trong Z gm

A. NaHCO3, Na2CO3, NaNO3, NaNO2. B. Na2CO3, NaNO3, NaNO2, NaOH.

C. NaHCO3, NaNO3, Na2CO3. D. Na2CO3, NaNO3, NaOH.

Cu 37. Cho cc dung dch sau:

NaHCO3 (X1) ; CuSO4 (X2) ; (NH4)2CO3 (X3) ; NaNO3 (X4) ; MgCl2 (X5) ; KCl (X6).

Nhng dung dch khng to kt ta khi cho Ba vo l:A. X1, X4, X5 B. X1, X4, X6 C. X1, X3, X6 D. X4, X6.

Cu 38. Hirocacbon F tc dng vi brom trong iu kin thch hp, thu c ch mt dn xut brom c t khi hi so vi hiro bng 75,5. Cht F l

A. pentan. B. xiclopentan. C. 2- metylbutan. D. 2,2-i metylpropan.

Cu 39. linh ng ca nguyn t H trong nhm OH ca cc cht: ru etylic, axit axetic, axit propionic, axit phenic, axit picric c sp xp theo th t tng dn

A. ru etylic, axit axetic, axit propionic, axit phenic, axit picric.

B. ru etylic, axit axetic, axit propionic, axit picric, axit phenic.

C. ru etylic, axit phenic, axit propionic, axit axetic, axit picric.

D. ru etylic, axit phenic, axit picric, axit axetic, axit propionic.

Cu 40. Hp cht hu c E mch h, ch cha mt loi nhm chc,c cng thc phn t C8H14O4. Cho E tc dng vi dung dch NaOH thu c mt ru duy nht l CH3OH v mt mui natri ca axit hu c F c mch cacbon khng phn nhnh. E c cng thc cu to l

A. CH3OCOCH2CH(CH3)CH2COOCH3. B. CH3OCOCH(CH3)CH(CH3)COOCH3.

C. CH3OCOCH2C(CH3)2COOCH3. D. CH3OCOCH2CH2CH2CH2COOCH3.

Cu 41. Cht hu c X (cha C, H, N, O) c cng thc phn t trng vi cng thc n gin nht. Trong X, cha 40,45% C, 7,86% H, 15,73% N, cn li l oxi. Khi cho 4,45 gam X tc dng vi NaOH va thu c 4,7 gam mui khan. Cng thc cu to ca X lA. H2N-CH2-CH2-COOH

B. CH3-CH(NH2)-COOH

C. H2N-CH2-COO-CH3

D. CH2=CH-COO-NH4

Cu 42. Cht hu c X c t khi hi so vi metan bng 4,625. Khi t chy X thu c s mol H2O bng s mol X chy, cn s mol CO2 bng 2 ln s mol nc. X tc dng c vi Na, NaOH v Ag2O trong dung dch NH3 sinh ra Ag. Cng thc cu to ca X lA. HCOOCH2CH3

B. C2H5COOH

C. HOOC-CHO

D. HOCH2CH2CHO

Cu. 43. Hp cht hu c E c cng thc phn t C4H6O2, tho mn iu kin sau:

1) cng H2 (xc tc Ni, to) theo t l mol 1:1.

2) phn ng chm vi dung dch NaOH nhit thng, ch phn ng mnh khi un nng.

3) sn phm thu c trong phn ng vi dung dch NaOH cho phn ng trng gng.

Cng thc cu to ca E l: A. CH3-COO-CH=CH2. B. CH2=CH-CH2-COOH.

C. CH2=CH-O-CH2-CHO. D. CH3-CH=CH-COOH.

Cu 44. Trong mt bnh kn dung tch khng i 5 lt cha 12,8g SO2 v 3,2g O2 (c mt t xc tc V2O5) nung nng. Khi phn ng t ti cn bng, phn trm th tch oxi trong bnh cn l 20%. Nng mol SO2 v O2 trng thi cn bng tng ng l

A. 0,03M v 0,02M B. 0,015M v 0,01MC. 0,02M v 0,02M D. 0,02M v 0,01M

ti cn bng, nng mol ca cc cht nh sau : [N2 ] = 0,5 mol/l ; [NH3 ] = 0,8 mol/l ; [H2 ] = 0,8 mol/l. Hng s cn bng v nng mol ca N2, H2 ban u tng ng bng

A. 2,5 ; 0,9 ; 2,0

B. 25 ; 1,5 ; 2,0

C. 25 ; 0,9 ; 1,0

D. 2,5 ; 0,9 ; 1,0

Cu 46. Thc hin phn ng nhit nhm 13,4 gam hn hp bt nhm v st(III) oxit c hn hp G. Ho tan G trong dung dch NaOH d, thot ra 3,36 lt kh H2 (cc p/ xy ra hon ton, th tch kh o ktc). Khi lng st(III) oxit c trong hn hp ban u bng A. 6,8 gam. B. 5,4 gam. C. 12 gam D. 8 gam.

Cu 47. C 5 mu kim loi Ba, Mg, Ag, Al, Fe. Ngi ta c th nhn bit c tng kim loi m ch cn dng mt dung dch cha mt ho cht lm thuc th l

A. HCl. B. HNO3. C. NaOH. D. Fe(NO3)3.

Cu 48. Pht biu no sau y khng ng:

A. Mt cht c tnh oxi ho gp mt cht c tnh kh, c th xy ra phn ng oxi ho - kh.

B. Mt cht hoc ch c tnh oxi ho hoc ch c tnh kh.

C. Phn ng c kim loi tham gia l phn ng oxi ho - kh.

D. Phi kim l cht oxi ho trong phn ng vi kim loi v hiro.

Cu 49. Ru X c cng thc phn t CnHmOz ( z n ). X l ru no, mch h th gi tr thch hp ca m v n l

A. m = 2n + 2. B. m = 2n + 1. C. m = 2n z. D. m = 2n + z.

Cu 50. T cc s phn ng sau :

a) X1 + X2 Ca(OH)2 + H2 b)X3 + X4 CaCO3 + Na2CO3 + H2O

b) X3 + X5 Fe(OH)3 + NaCl + CO2 d)X6 + X7 + X2 Al(OH)3 + NH3 + NaCl

Cc cht thch hp vi X2, X3, X4, X5 tng ng l:

A. Ca ; NaOH ; Ca(HCO3)2 ; FeCl3

B. H2O ; Ca(HCO3)2 ; NaOH ; FeCl3C. H2O ; NaHCO3 ; Ca(OH)2 ; FeCl3

D. Ca ; Ca(OH)2 ; NaHCO3 ; FeCl3

p n

1234567891011121314151617

CCDBABCCDACDBAAAC

2122232425262728293031323334353637

DADCABCAADADACBBC

41424344454647484950181920383940

DCADADDBACBCBDCD

NTT

THI TH I HC 2009-2010

MN :HA HC

S : 05

Cu 1. Nhm cc phn t, nguyn t v ion c tng s electron bng nhau :

A. Na, Al3+, CH4, H2S, NH3, Mg.

B. Na+, Al3+, CH4, H2O, NH3, Mg2+C. Na, Al3+, CH4, H2S, NH3, HF

D. Na, Al3+, SiH4, H2O, NH3, Mg2+Cu 2. Hai nguyn t X, Y thuc 2 phn nhm chnh lin tip trong bng tun hon. Tng s electron trong 2 nguyn t X, Y bng 19. Phn t hp cht XxYy c tng s proton bng 70. Cng thc phn t hp cht l

A. Mg3N2

B. CaC2

C. Al4C3

D. Na2O

Cu 3. Phn ng este ho gia ru etylic v axit axetic nhit th nghim c hng s cn bng Kcb = 4. Thc hin phn ng este ho 1 mol axit axetic v 2 mol ru etylic nhit trn th s mol este thu c l

A. 0,155 mol

B. 0,55 mol

C. 0,645 mol

D. 0,845 mol

Cu 4. t chy m gam ng (II) sunfua trong kh oxi d thu c cht rn X c khi lng

bng (m 4,8) g Nung X trong kh NH3 d ti khi lng khng i c cht rn Y. Ho tan Y

trong dung dch HNO3 long d, thu c V lt kh Z (ktc) khng mu, nng hn oxi. Gi tr ca m (gam) v V (lt) l

A. 19,2g v 1,12 lit B. 28,8g v 1,68 lit C. 24,0g v 1,68 lit D. 28,8g v 1,12 lit

Cu 5. Cho 4,48 lt kh CO (ktc) i t t qua ng s nung nng ng 23,2 gam Fe3O4. Sau khi dng phn ng, thu c cht rn X v kh Y c t khi so vi hiro bng 18. Ho tan X trong dung dch HNO3 long d thu c V lt kh NO (ktc). Khi lng cht rn X v th tch kh NO thu c l

A. 21,6g v 2,24 lit B.20,0g v 3,36 lit C.20,8g v 2,8 litD.21,6g v 3,36 lit

Cu 6. Trn 250 ml dung dch gm HCl v H2SO4 c pH = 2 vo 250 ml dung dch Ba(OH)2 c pH = 13 thy c 0,1165 gam kt ta. Nng mol ca HCl v H2SO4 ban u ln lt l

A. 0,003M v 0,002M

B. 0,003M v 0,003M

C. 0,006M v 0,002M

D. 0,006M v 0,003M

Cu 7. Mt hn hp gm axit no n chc X v ru no n chc Y c khi lng phn t bng nhau. Chia hn hp ra 2 phn bng nhau : Phn 1 tc dng vi Na d thu c 0,56 lt H2. t chy hon ton phn 2 sinh ra 2,688 lt kh CO2. Cng thc phn t v phn trm khi lng X, Y trong hn hp l (cc th tch kh o ktc)

A. HCOOH 60% ; C2H5OH 40%

B. CH3COOH 60% ; C3H7OH 40%

C. HCOOH 40% ; C2H5OH 60%

D. CH3COOH 40% ; C3H7OH 60%

Cu 8. un nng hn hp 3 ru no n chc X, Y, Z vi H2SO4 c 170oC ch thu c 2 anken l ng ng k tip nhau. Mt khc, khi un nng hn hp 2 trong 3 ru trn vi H2SO4 c 140oC th thu c 1,32 gam hn hp 3 ete c s mol bng nhau. T khi hi ca hn hp ete so vi hiro bng 44. Bit Y, Z c cng s nguyn t C v Y l ru bc1. Cng thc cu to ca X, Y, Z v % khi lng ca X trong hn hp

A. X: CH3CH2OH 43,39%; Y: CH3CH2CH2OH ; Z: CH3CHOHCH3B. X: CH3CH2OH 33,39%; Y: CH3CH2CH2OH Z: CH3CHOHCH3C. X: CH3CH2CH2OH 43,39%; Y: CH3CH2CH2CH2OH Z: CH3CH2CHOHCH3D. X: CH3CH2CH2OH 33,39%; Y: CH3CH2CH2CH2OH Z: CH3CH2CHOHCH3Cu 9. Th tch hi ca 6,84 gam hn hp 2 cht X, Y l ng ng k tip nhau bng th tch ca 3,2 gam kh oxi o cng iu kin. t chy hon ton 3,42 gam hn hp trn cn dng 6,045 lt O2 (ktc) thu c 7,92 gam CO2. Oxi ho khng hon ton X hoc Y u thu c sn phm c phn ng trng gng v u c mch cacbon khng phn nhnh. Cng thc cu to ca X, Y tng ng l

A. CH3OH v CH3CH2OH. B. CH3CH2OH v CH3CH2CH2OH

C. CH3CH2CH2OH v CH3CH2CH2CH2OH D. CH3CH2CH2CH2OH v CH3CH2CH2CH2CH2OH

Cu 10. 109,2oC v 1 atm, th tch ca 1,08 gam hn hp 2 cht hu c cng chc X, Y bng 627,2 ml. Nu cho 1,08 gam hn hp trn tc dng vi Na d th c 336 ml kh thot ra (ktc) ; cn nu t chy hon ton 1,08 gam hn hp ny th thu c 896 ml kh CO2 (ktc) v 1,08 gam H2O. Cng thc phn t X, Y l

A. CH3OH v C2H5OH.

B. C2H5OH v C2H4(OH)2C. C2H4(OH)2 v C3H5(OH)3

D. C3H7OH v C2H4(OH)2Cu 11. Ho hi 1,4 gam mt anehit X thu c th tch hi ng bng th tch ca 0,64 gam oxi cng iu kin nhit v p sut. Mt khc, hiro ho hon ton X (xt Ni, to ) thu c ru iso butylic. Cng thc cu to ca X l

A. CH3CH2CH2CHO

B. CH2=CHCH2CHO

C. CH3CH(CH3)CHO

D. CH2=C(CH3)CHO

Cu 12. Ho tan cng mt lng oxit ca kim loi M (c ho tr khng i) trong dung dch HCl v dung dch HNO3. C cn 2 dung dch thu c 2 mui khan, thy khi lng mui nitrat nhiu hn khi lng mui clorua mt lng bng 99,38 % khi lng oxit em ho tan. Cng thc oxit l

A. MgO

B. Al2O3

C. CuO

D. Fe2O3Cu 13. Hoat tan hon ton 12 gam hn hp X gm CuO, Fe2O3, MgO cn dng va 225 ml dung dch HCl 2M. Mt khc, nu t nng 12 gam X trong kh CO d phn ng xy ra hon ton th thu c 10 gam cht rn Y. Phn trm khi lng Fe2O3 trong hn hp X bng

A. 33,33 %

B. 40,00 %

C. 66,67 %.

D. 50,00 %

Cu 14. Kh m gam Fe2O3 bng CO mt thi gian c cht rn X. Ho tan ht cht rn X trong dung dch HNO3 long, thu c 0,224 lt kh NO (l sn phm kh duy nht ktc). C cn dung dch sau phn ng c 18,15 gam mui khan. Hiu sut ca phn ng kh oxit st bng

A. 26,67 %

B. 30,25 %

C. 13,33 %

D. 25,00 %

Cu 15. ho tan hon ton mt hiroxit ca kim loi M (c ho tr khng i) cn mt lng axit H2SO4 ng bng khi lng hiroxit em ho tan. Cng thc phn t hiroxit kim loi l

A. Al(OH)3

B. Fe(OH)3

C. Mg(OH)2

D. Cu(OH)2.

Cu 16. Nh t t 3 V1 ml dung dch Ba(OH)2 (d.d X) vo V1 ml dung dch Al2(SO4)3 (d.d Y) th phn ng va v ta thu c kt ta ln nht l m gam.. Nu trn V2 ml dung dch X trn vo V1 ml dung dch Y th kt ta thu c c khi lng bng 0,9m gam. So snh t l V2 / V1 thy

A. V2 / V1 = 2,7 hoc V2 / V1 = 3,55

B. V2 / V1 = 2,5 hoc V2 / V1 = 3,25

C. V2 / V1 = 1,7 hoc V2 / V1 = 3,75

D. V2 / V1 = 2,5 hoc V2 / V1 = 3,55

Cu 17. Hai cc ng axit H2SO4 long t trn 2 a cn A v B, cn v tr thng bng. Cho 5 gam CaCO3 vo cc a A ; 4,8 gam M2CO3 (M l kim loi kim). Sau khi phn ng xong, cn tr li v tr thng bng. Kim loi M l

A. Li

B. Na

C. K

D. Rb

Cu 18. Ho tan 19,5 gam hn hp X gm Na2O v Al2O3 vo nc c 500 ml dung dch Y. Dn t t kh CO2 vo dung dch Y ng thi khuy u cho n khi bt u xut hin kt ta th dng li, thy th tch kh CO2 (ktc) dng ht 2,24 lt. Khi lng Na2O v Al2O3 trong hn hp X ln lt bng

A. 6,2g v 13,3gB. 12,4g v 7,1gC. 9,3g v 10,2gD. 10,85g v 8,65g

Cu 19. Cho 7 gam hn hp Cu, Fe (trong Fe chim 40 % khi lng) tc dng vi V ml dung dch HNO3 long, sau khi phn ng xy ra hon ton, thu c kh NO (sn phm kh duy nht) v cn li 4,76 gam kim loi khng tan v dung dch X ch cha mui nitrat kim loi. Khi lng mui c trong dung dch X bng

A. 9,68 gam.

B. 7,58 gam C. 7,20 gam D. 6,58 gam

Cu 20. Mnh no sau y khng ng ?

A. S thay i nng cht phn ng lm chuyn dch cn bng.

B. S thay i nng cht phn ng lm thay i hng s cn bng.

C. S thay i nhit phn ng lm thay i hng s cn bng.

D. S thay i nhit phn ng lm thay chuyn dch cn bng khi phn ng thu hoc to nhit.

Cu 21. iu ch SO2 trong phng th nghim bng cch cho dung dch H2SO4 tc dng vi mui sunfit. Mui no sau y c chn iu ch SO2 l thun li nht ?

A. Na2SO3 v CaSO3.

B. CaSO3 v BaSO3C. BaSO3 v CuSO3 D. CuSO3 v Na2SO3Cu 22. M t hin tng th nghim no sau y khng ng ?

A un nng dung dch lng trng trng, xut hin kt ta trng.

B Nh vi git dung dch HNO3 vo dung dch lng trng trng thy xut hin kt ta mu vng.

C. t chy mt mu lng trng trng xut hin mi kht nh mi tc chy.

D.Nh vi git dung dch NaOH v dung dch CuSO4 vo dung dch lng trng trng, trn u thy xut hin mu vng.

Cu 23. Polime no di y thc t khng s dng sn xut cht do ?

A. Poli(vinyl clorua)

B. Poliacrilonitrin

C. Polimetylmetacrylat

D. Poliphenol fomanehit

Cu 24. Cho hn hp X gm 11,6 gam oxit st t v 3,2 gam Cu tc dng vi 400 ml dung dch HCl 1M. Kt thc phn ng, cho dung dch thu c tc dng vi dung dch AgNO3 d th khi lng kt ta thu c l

A. 28,7 gam.

B. 57,4 gam.

C. 73,6 gam.

D. 114,8 gam.

Cu 25. thu c kt ta hon ton Al(OH)3 t dung dch mui c th thc hin phn ng:

A. Cho dung dch AlCl3 tc dung vi dung dch NaOH d

B. Cho dung dch Al2(SO4)3 tc dng vi dung dch Ba(OH)2 va

C. Cho dung dch AlCl3 vi dung dch NH3 d.

D. Cho dung dch NaAlO2 tc dng vi dung dch HCl d

Cu 26. Na, K, Ca c sn xut trong cng nghip bng cch :

A. Dng phng php nhit luyn B. in phn hp cht nng chy

C. Dng phng php thu luyn D. in phn dung dich mui

Cu 27. C hai cht bt ring bit Fe3O4 v Fe2O3, phn bit hai cht bt c th dng ho cht l: A. Dung dch HNO3 B. Dung dich HCl

C. Dung dch HCl v Cu D. Dung dch H2SO4 long v Al

Cu 28: Cho t t lung kh CO2 sc vo dung dch NaAlO2 cho n d hin tng xy ra l:

A. Dung dch vn c sau trong tr li

B. Dung dch b vn c

C. Thi gian u khng c hin tng g, sau dung dch vn c

D. Khng c hin tng g.

Cu 29. Nhng thanh kim loi R (ho tr II)c khi lng 9,6g vo dung dch cha 0,24 mol Fe(NO3)3. Sau mt thi gian ly thanh kim loi ra, dung dch thu c c khi lng bng khi lng dung dch ban u, thanh kim loi sau em ho tan bng dd HCl d th thu c 6,272 lit H2(ktc). Kim loi R l A. Zn. B. Mg. C. Ni. D. Cd.

Cu 30. iu khng nh no sau y khng ng ?

A. un nng ru metylic vi axit H2SO4 c 170oC khng thu c anken.

B. Anilin khng lm nc qu tm ho xanh.

C. Phenol tc dng vi dung dch nc brom to kt ta trng.

D. Tt c cc ru no a chc u ho tan c Cu(OH)2 to dung dch mu xanh lam.

Cu 31. Cho a mol AlCl3 tc dng vi dung dch cha b mol NaOH. sau phn ng thu c kt ta th t l a : b bng

A. a/b = 1/5

B. a/b = 1/4

C . a/b > 1/4

D . a/b < 1/4

Cu 32. Cho 6,94 gam hn hp gm FexOy v Al ho tan hon ton trong 100 ml dung dch H2SO4 1,8 M, to ra 0,672 lt H2 (ktc). Bit khi lng H2SO4 ly d 20% so vi lng cn thit cho phn ng . FexOy l

A. FeO

B. Fe2O3

Fe3O4

D. Bi ton khng gii c.

Cu 33. nhn bit cc cht etanol, propenol, etylenglycol, phenol c th dng cp cht:

A. nc brom v dung dch NaOH

B. nc brom v Cu(OH)2C. dung dch NaOH v Cu(OH)2

D. dung dch KMnO4 v Cu(OH)2Cu 34. Cho Na d vo m gam dung dch ru etylic trong nc, thy lng hiro bay ra bng 0,03m gam. Nng phn trm C2H5OH trong dung dch bng

A. 75,57 %

B. 72,57 %

C. 70,57 %

D. 68,57 %

Cu 35. Cc dung dch sau c cng nng mol/lit : NH3, Na2CO3, NaOH, NH4Cl. pH ca chng tng dn theo th t

A. NH3, Na2CO3, NaOH, NH4Cl

B. NH4Cl, Na2CO3, NaOH, NH3C. NH3, NH4Cl, NaOH, Na2CO3

D. NH4Cl, Na2CO3, NH3, NaOH

Cu 36. Kt lun no sau y khng ng ?

A. Hn hp Na2O + Al2O3 c th tan ht trong nc.

B. Hn hp Fe2O3 + Cu c th tan ht trong dung dch HCl.

C. Hn hp KNO3 + Cu c th tan ht trong dung dch NaHSO4.

D. Hn hp FeS + CuS c th tan ht trong dung dch HCl.

Cu 37. Cho s phn ng :

X + HNO3 long Fe(NO3)3 + NO + H2O. S cht X c th thc hin phn ng trn l

A. 3

B. 4

C. 5

D. 6.

Cu 38. Trong s phn ng : a) Cu + X Y + Z ; b) Fe + Y Z + Cu

c) Fe + X Z. d) Z + Cl2 X.

Cc cht X,Y, Z ln lt l

A. FeCl3 ; FeCl2 ; CuCl2

B. FeCl3 ; CuCl2 ; FeCl2C. AgNO3 ; Fe(NO3)2 ; Cu(NO3)2

D. HNO3 ; Cu(NO3)2 ; Fe(NO3)3Cu 39. X l mt anehit mch h, mt th tch hi ca X kt hp c vi ti a 3 th tch H2, sinh ra ancol Y. Y tc dng vi Na d c th tch H2 ng bng th tch hi ca X ban u ( cc th tch kh v hi o cng iu kin). X c cng thc tng qut l

A. CnH2n 1CHOB. CnH2n (CHO)2C. CnH2n + 1CHOD. CnH2n 2 (CHO)2.

Cu 40. Pht biu no sau y l ng

A. Cc axit hu c u tan trong nc . B. Cc axit hu c u lm qu tm.

C. Cc axit hu c u th lng.

D. Axit fomic mnh nht trong dy ng ng.

Cu 41. Trong dy bin ho sau

C2H6 C2H5Cl C2H5OH CH3CHO CH3COOH CH3COOC2H5 C2H5OH

S phn ng oxi ho kh l A. 2

B. 3

C. 4

D. 6

Cu 42. C 2 axit cacboxylic X v Y. Trn 1 mol X vi 2 mol Y ri cho tc dng vi Na d c 2 mol H2 . Trn 2 mol X vi 1 mol Y ri cho tc dng vi Na d c 2,5 mol H2. S nhm chc trong X v Y l

A. X, Y u n chc.

B. X n chc, Y 2 chc

C. X 2 chc, Y n chc.

D. X, Y u 2 chc

Cu 43. Khi t chy cc ng ng ca mt loi ancol th t l nCO2 : nH2O tng dn khi s nguyn t C trong ancol tng dn. Cng thc ca dy ng ng ancol l

A. CnH2nO, n3 B. CnH2n + 2O, n1 CnH2n 6O, n7D. CnH2n 2O, n3

Cu 44. t chy hon ton mt hirocacbon X thu c s mol CO2 bng s mol H2O. iu khng nh no sau y lun ng.

A. X l mt anken

B. X l mt xicloankan

C. Phn t X cha mt lin kt

D. T l s H : s C trong X lun bng 2:1

Cu 45. T capron l mt loi

A. t axetatB. t visco

C. t poliamit

D. t polieste.

Cu 46. Dy gm cc cht u tc dng vi dung dch Ag2O/NH3 l

A. axetandehit, butin -1, eten

B. axetandehit, butin -2, etin

C. natri fomiat, vinylaxetilen, etin

D. natri fomiat, vinylaxetilen, eten.

Cu 47. in phn dung dch CuCl2 vi in cc tr, sau mt thi gian thu c 0,32 gam Cu catot v mt lng kh X anot. Hp th ton b 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 (Cu = 64)

A. 0,15M

B. 0,2M

C. 0,1M

D. 0,05M.

Cu 48. -aminoaxit X cha mt nhm NH2. Cho 10,3 gam X tc dng vi axit HCl(d) , thu c 13,95 gam mui khan. cng thc cu to thu gn ca X l(cho H = 1, C = 12, O = 16, N =

A. H2NCH2COOH

B. H2NCH2CH2COOH

C. CH3CH2CH(NH2)COOH

D. CH3CH(NH2)COOH

Cu 49. Cho dy cc cht : Ca(HCO3)2, NH4Cl, (NH4)2CO3, ZnSO4, Al(OH)3, Zn(OH)2. S cht trong dy c tnh cht lng tnh l A. 3

B. 5

C. 4

D. 2

Cu 50. t chy hon ton a mol axit hu c Y c 2a mol CO2. Mt khc trung ho a mol Y cn va 2a mol NaOH. Cng thc cu to thu gn ca Y l

A. HOOC-CH2CH2-COOH

B. C2H5COOH

C. CH3-COOH

D. HOOC-COOH.

p n

1234567891011121314151617

BCDBACBACBDDACDAB

2122232425262728293031323334353637

DDBBCBABBDCBBADDC

41424344454647484950181920383940

BCBDCCCCCDCCBBDD

NTT

THI TH I HC 2009-2010

MN :HA HC

S : 06

Cu 1: Hn hp X cha K2O, NH4Cl, KHCO3 v BaCl2 c s mol bng nhau. Cho hn hp X vo nc (d), un nng, dung dch thu c cha

A. KCl, KOH. B. KCl.C. KCl, KHCO3, BaCl2. D. KCl, KOH, BaCl2.

Cu 2: Cho hp cht hu c X c cng thc phn t C6H6O2. Bit X tc ng vi dung dch KOH theo t l mol l 1 : 2. S ng phn cu to ca X l

A. 3.

B. 4. C. 1.

D. 2.

Cu 3: Cho Ba kim loi ln lt vo cc dung dch sau: NaHCO3, CuSO4, (NH4)2CO3, NaNO3, MgCl2. S dung dch to kt ta lA. 1.B. 2.

C. 3.

D. 4.

Cu 4: Ho tan ht cng mt lng Fe trong dung dch H2SO4 long (1) v H2SO4 c nng (2) th th tch kh sinh ra trong cng iu kin l A. (1) bng (2). B. (1) gp i (2). C. (2) gp ri (1). D. (2) gp ba (1).

Cu 5: C bao nhiu hp cht hu c (cha C, H, O) phn t khi l 60 v tc dng c vi Na kim loI A. 5.

B. 4.

C. 3.

D. 2.

Cu 6: Hn hp gm C2H5OH, CH3CHO, CH3COOH. Ngi ta thu hi CH3COOH bng cch dng ho cht

A. Na, dung dch H2SO4.

B. Ag2O/NH3, dung dch H2SO4.

C. Cu(OH)2, dung dch NaOH.

D. dung dch NaOH, dung dch H2SO4.

Cu 7: Cho s : Ru (( anken (( polime. C bao nhiu polime to thnh t ru c cng thc phn t C5H12O c mch cacbon phn nhnh:

A. 3.

B. 4.

C. 5.

D. 6.

Cu 8: Cho cc cht: C2H6, C2H4, CH3CHO, CH3COOCH=CH2. S cht ph hp vi cht X theo s sau C2H2 ((( X ((( Y ((( CH3COOH.

A. 4.

B. 3.

C. 2.

D. 1.

Cu 9: C4H8O2 l hp cht tp chc ru - anehit. S ng phn ca n l

A. 3.

B. 4.

C. 5.

D. 6.

Cu 10: Cho s :

X (((( Y (((( D (((( E (((( thu tinh plecxiglat.

X c cng thc l:

A. CH3CH(CH3)CH2OH.

B. CH2=C(CH3)CH2OH.

C. CH2=C(CH3)CH2CH2OH.

D. CH3CH(CH3)CH2CH2OH.

Cu 11: t chy hon ton 10 ml mt este cn 45 ml O2 thu c V: V= 4 : 3. Ngng t sn phm chy thy th tch gim 30 ml. Cc th tch o cng iu kn. Cng thc ca este l

A. C4H6O2. B. C4H6O4.C. C4H8O2

D. C8H6O4.

Cu 12: Cho mt t bt st vo dung dch AgNO3 d, sau khi kt thc th nghim thu c dung dch X gm

A. Fe(NO3)2 , H2O.

B. Fe(NO3)2 , AgNO3 d, H2O.

C. Fe(NO3)3 , AgNO3 d, H2O.

D. Fe(NO3)2 , Fe(NO3)3 , AgNO3 d, H2O.

Cu 13: Dung dch cha cc ion Na+, Ca2+, Mg2+, Ba2+, H+, Cl(. Phi dng dung dch cht no sau y loi b ht cc ion Ca2+, Mg2+, Ba2+, H+ ra khi dung dch ban u?

A. K2CO3.

B. NaOH.C. Na2SO4.

D. AgNO3.

Cu 14: Mt hn hp X c khi lng m gam gm Ba v Al. Cho m gam X tc dng vi nc d, thu c 8,96 lt kh H2.Cho m gam X tc dng vi dung dch Ba(OH)2 d thu c 22,4 lt kh H2. (Cc phn ng u xy ra hon ton, cc th tch kh o iu kin tiu chun, cho Al = 27, Ba = 137). m c gi tr l:

A. 29,9 gam.

B. 27,2 gam. C. 16,8 gam.

D. 24,6 gam.

Cu 15: Cho cc cu sau:

1- Cht bo thuc loi cht este.

2- T nilon, t capron, t enang u iu ch bng phn ng trng ngng.

3- Vinyl axetat khng iu ch c trc tip t axit v ru tng ng.

4- Nitro benzen phn ng vi HNO3 c (xc tc H2SO4 c) to thnh m-initrobenzen.

5- Anilin phn ng vi nc brom to thnh p-bromanilin.

Nhng cu ng l:

A. 1, 2, 4.

B. 2, 3, 4.C. 1, 4, 5.

D. 1, 3, 4.

Cu 16: Cho hn hp hai aminoaxit u cha 1 nhm amino v 1 nhm cacboxyl vo 440 ml dung dch HCl 1M c dung dch X. tc dng ht vi dung dch X cn 840 ml dung dch NaOH 1M. Vy khi to thnh dung dch X th

A. aminoaxit v HCl cng ht.

B. d aminoaxit.

C. d HCl.

D. khng xc nh c.

Cu 17: Hn hp X gm hai axit cacboxylic u no, mch h. Trung ho 0,3 mol X cn 500 ml dung dch NaOH 1M. Khi t chy hon ton 0,3 mol X thu c 11,2 lt CO2 ( ktc). Cng thc ca hai axit l:

A. HCOOH; C2H5COOH.

B. CH3COOH; C2H5COOH.

C. HCOOH; (COOH)2.

D. CH3COOH; CH2(COOH)2.

Cu 18: un 9,2 gam glixerin v 9 gam CH3COOH c xc tc thu c m gam sn phm hu c E cha mt loi nhm chc. Bit hiu sut phn ng bng 60%. Gi tr ca m l:

A. 8,76.

B. 9,64.

C. 7,54.

D. 6,54.

Cu 19: t chy hon ton 1,44 gam hp cht thm X thu c 2,86 gam CO2, 0,45 gam H2O v 0,53 gam Na2CO3. X c cng thc phn t trng vi cng thc n gin nht. Cng thc ca X l A. C6H5COONa. B. C6H5ONa. C. C6H5CH2ONa. D. C6H5CH2CH2ONa.

Cu 20: Bt nhm dng ch to hn hp tec mit hn kim loi. Thnh phn ca hn hp tec mit gm

A. Al2O3 v Fe3O4.

B. Al v Fe2O3.

C. Al v FeO.

D. Al v Fe3O4.

Cu 21: Cho V lt kh CO2 ( ktc) hp th hon ton vo 200 ml dung dch hn hp KOH 1M v Ba(OH)2 0,75M thu c 27,58 gam kt ta. Gi tr ln nht ca V l (cho C = 12, O =16, Ba = 137) A. 6,272 lt. B. 8,064 lt.C. 8,512 lt.

D. 2,688 lt.

Cu 22: Cho 10 gam hn hp Fe, Cu (cha 40% Fe) vo mt lng H2SO4 c, un nng. Kt thc phn ng, thu c dung dch X, kh Y v cn li 6,64 gam cht rn. Khi lng mui to thnh trong dung dch X l (cho O = 16; S = 32; Fe = 56; Cu = 64)

A. 9,12 gam. B. 12,5 gam.C. 14,52 gam.

D. 11,24 gam.

Cu 23: Cho 3,04 gam hn hp X gm FeO, Fe3O4, Fe2O3. kh hon ton hn hp X th cn 0,1 gam hiro. Mt khc, ho tan hn hp X trong H2SO4 c, nng th th tch kh SO2 (l sn phm kh duy nht ktc) l (cho H = 1; O = 16; Fe = 56) A. 112 ml.

B. 224 ml.

C. 336 ml. D. 448 ml.

Cu 24: Mt este ca ru metylic tc dung vi nc brom theo t l s mol l 1 : 1. Sau phn ng thu c sn phm trong brom chim 35,1% theo khi lng. Este l:

A. metyl propionat.B. metyl panmitat. C. metyl oleat. D. metyl acrylat.

Cu 25: Trn dung dch cha a mol NaAlO2 vi dung dch cha b mol HCl. thu c kt ta th cn c t l:

A. a : b = 1 : 4.B. a : b < 1 : 4.C. a : b = 1 : 5.

D. a : b > 1 : 4.

Cu 26: Cho mt axit cacboxylic n chc tc dng vi etylenglicol thu c mt este duy nht. Cho 0,2 mol este ny tc dng va vi dung dch NaOH thu c 16,4 gam mui. Axit l:

A. HCOOH. B. CH3COOH.C. C2H5COOH.

D. C2H3COOH.

Cu 27: t chy hon ton 1,18 gam mt hp hp cht amin n chc Y bng mt lng khng kh va . Dn ton b kh sau phn ng vo bnh ng dung dch Ca(OH)2 d thu c 6 gam kt ta v 9,632 lt kh ( ktc) duy nht thot ra khi bnh. Tm cng thc phn t ca Y.

A. CH5N.

B. C2H7N.C. C3H9N.

D. C4H11N.

Cu 28: Kh 1,6 gam hn hp hai anehit no bng kh H2 thu c hn hp hai ru. un hai ru ny vi H2SO4 c c hn hp hai olefin l ng ng k tip. t hai olefin ny c 3,52 gam CO2. Bit cc phn ng xy ra hon ton. Cng thc ca hai anehit l (cho H = 1; C =12; O = 16)

A. HCHO, CH3CHO.

B. CH3CHO, C2H5CHO.

C. C2H5CHO, C3H7CHO.

D. Khng xc nh c.

Cu 29: Trong qu trnh in phn dung dch KCl, qu trnh no sau y xy ra cc dng (anot)

A. ion Cl( b oxi ho. B. ion Cl( b kh.C. ion K+ b kh. D. ion K+ b oxi ho.

Cu 30: lm mm mt loi nc cng c cha CaCl2 v Mg(HCO3)2 ta c th dng

A. Na3PO4.

B. NaOH.

C. NaCl.

D. Ca(OH)2.

Cu 31: Hn hp hai cht hu c tc dng vi dung dch NaOH thu c hai mui ca hai axit n chc v mt ru. Hai cht hu c l

1) X, Y l hai este ca cng mt ru.2) X, Y l hai este ca cng mt axit.

3) X, Y l mt este v mt axit.

4) X, Y l mt este v mt ru.

Nhng cu ng l

A. (1), (2).

B. (2), (3). C. (3), (4).

D. (1), (3).

Cu 32: un hn hp gm metanol, etanol v propanol-1 vi H2SO4 c nhit thch hp t 140o n 180oC th thu c bao nhiu sn phm l hp cht hu c?

A. 5.

B. 6.

C. 8.

D. 9.

Cu 33: Cho cc cht: C4H10O, C4H9Cl, C4H10, C4H11N. S ng phn ca cc cht gim theo th t

A. C4H9Cl, C4H10, C4H10O, C4H11N. B. C4H11N, C4H9Cl, C4H10O, C4H10.

C. C4H11N, C4H10O, C4H9Cl, C4H10. D. C4H11N, C4H10O, C4H10, C4H9Cl.

Cu 34: Khi vt bng gang, thp b n mn in ho trong khng kh m, nhn nh no sau y ng?

A. Tinh th st l cc dng, xy ra qu trnh kh.

B. Tinh th st l cc m, xy ra qu trnh oxi ho.

C. Tinh th cacbon l cc dng, xy ra qu trnh oxi ho.

D. Tinh th cacbon l cc m, xy ra qu trnh oxi ho.

Cu 35: t chy hon ton a gam mt ru thu c 33a/23 gam CO2 v 18a/23 gam H2O. Ru l:

A. C2H5OH. B. C2H4(OH)2.

C. C3H7OH.

D. C3H5(OH)3.

Cu 36: X phng ho hon ton 0,1 mol mt este n chc bng 180 ml dung dch MOH 1 mol/lt (M l kim loi kim). C cn dung dch thu c cht rn A. t ht cht rn A thu c 12,42 gam M2CO3. Kim loi M l

A. Li.

B. Na

C. K.

D. Rb.

Cu 37: Xt phn ng: 2Al + 2NaOH + 2H2O ( 2NaAlO2 + 3H2. Vai tr ca cc cht l:

A. Al l cht kh, nguyn t H trong NaOH ng vai tr l cht oxi ho. B. Al l cht kh, nguyn t O trong NaOH ng vai tr l cht oxi ho.

C. Al l cht kh, nguyn t H trong H2O ng vai tr l cht oxi ha.

D. Al l cht kh, nguyn t H trong c NaOH v H2O ng vai tr l cht oxi ho.

Cu 38: Cho 20 gam S vo mt bnh c dung tch bng 44,8 lt cha O2 ( ktc), th tch cht rn khng ng k. Nung bnh cho n khi phn ng hon ton, p sut trong bnh khi tr v 0oC l (cho S = 32)

A. 2atm.

B. 2,1atm.

C. 1atm.

D. 1,2atm.

Cu 39: Dung dch mui no di no di y c pH > 7 ?

A. NaHSO4.

B. NaNO3.C. NaHCO3.

D. (NH4)2SO4. Cu 40: Ho tan hon ton 16 gam hn hp Mg v Fe bng dung dch H2SO4 long va . Sau phn ng thy khi lng dung dch tng thm 15,2 gam so vi ban u. Khi lng mui khan thu c khi c cn dung dch sau phn ng l (cho H = 1; O = 16; Mg = 24; S = 32; Fe = 56)

A. 53,6 gam. B. 54,4 gam.

C. 92 gam

D. 92,8 gam.

Cu 41: Ch dng thm dung dch H2SO4 long, c th nhn bit c bao nhiu kim loi trong s cc kim loi: Mg, Al, Fe, Cu, Ba?

A. 2.

B. 3.

C. 4.

D. 5.

Cu 42: Cho s phn ng:

CH2=CH2 + KMnO4 + H2SO4 (( (COOH)2 + MnSO4 + K2SO4 + H2O

T l v h s gia cht kh v cht oxi ho tng ng l:A. 5 : 2.

B. 2 : 5.

C. 2 : 1.

D. 1 : 2.

Cu 43: Cho 11,6 gam mui FeCO3 tc dng va vi dung dch HNO3, c hn hp kh CO2, NO v dung dch X. Khi thm dung dch HCl (d) vo dung dch X, th dung dch thu c ho tan ti a bao nhiu gam bt ng kim loi, bit rng c kh NO bay ra. (Cho C = 12; O = 16; Fe = 56; Cu = 64).

A. 14,4 gam

B. 7,2 gam. C. 16 gam.

D. 32 gam.

Cu 44: Dy no sau y xp theo chiu tng dn bn knh ca cc ion?

A. Al3+ ; Mg2+; Na+ ; F( ; O2(.

B. Na+; O2(; Al3+ ; F(; Mg2+.

C. O2(; F(; Na+; Mg2+; Al3+.

D. F(; Na+; O2(; Mg2+; Al3+.

Cu 45: Nhit phn hon ton Fe(NO3)2 trong khng kh thu c sn phm gm:

A. FeO, NO2, O2. B. Fe2O3, NO2. C. Fe, NO2, O2.

D. Fe2O3, NO2, O2.

Cu 46: C bn hp cht hu c cng thc phn t ln lt l: CH2O, CH2O2, C2H2O3 v C3H4O3. S cht va tc dng vi Na, va tc dng vi dung dch NaOH, va c phn ng trng gng l: A. 1.

B. 2.

C. 3.

D. 4.

Cu 47: Nhit phn hon ton m gam hn hp X gm CaCO3 v Na2CO3 thu c 11,6 gam cht rn v 2,24 lt kh (ktc). Khi lng CaCO3 v Na2CO3 trong hn hp X ln lt l

(cho C = 12; O = 16; Na = 23; Ca = 40)

A. 10,0 gam v 6,0 gam.

B. 11,0 v 6,0 gam.

C. 5,6 gam v 6,0 gam.

D. 5,4 gam v 10,6 gam.

Cu 48: X phng ho este C5H10O2 thu c mt ru. un ru ny vi H2SO4 c 170oC c hn hp hai olefin. Este l:

A. CH3COOCH2CH2CH3.

B. CH3COOCH(CH3)2.

C. HCOOCH(CH3)C2H5.

D. HCOO(CH2)3CH3.

Cu 49: Cho hai mui X, Y tho mn iu kin sau:

X + Y (( khng xy ra phn ng.

X + Cu (( khng xy ra phn ng.Y + Cu (( khng xy ra phn ng.

X + Y + Cu (( xy ra phn ng.X v Y l mui no di y?A. NaNO3 v NaHSO4. B. NaNO3 v NaHCO3. C. Fe(NO3)3 v NaHSO4. D. Mg(NO3)2 v KNO3.Cu 50: Cho dung dch cha a mol Ca(HCO3)2 vo dung dch cha a mol Ca(HSO4)2. Hin tng quan st c lA. si bt kh v vn c.

B. vn c.

C. si bt kh.

D. vn c, sau trong sut tr li.

P N

1234567891011121314151617

BADCBDABCBACAADCC

2122232425262728293031323334353637

BABCDBCBAADCCBDCC

41424344454647484950181920383940

DDDADCCCAADADCCB

NTT

THI TH I HC 2009-2010

MN :HA HC

S : 07

Cu 1. Thc hin p/ nhit nhm m gam hn hp A gm Al, Fe2O3 c hn hp B ( H = 100%).

Chia B thnh 2 phn bng nhau. Ho tan phn 1 trong H2SO4 long d, thu c 1,12 lt kh (ktc).

Ho tan phn 2 trong dung dch NaOH d th khi lng cht khng tan l 4,4 gam. Gi tr ca m bng: A. 6,95g.

B. 13,9g.

C. 8,42g.

D. 15,64g.

Cu 2. Ly 13,4gam hn hp Al v Fe2O3 thc hin hon ton p/ nhit nhm, thu c cht rn X. Ho tan hon ton X trong dung dch H2SO4 long d thy thot ra 5,6 lt kh H2 (ktc). Khi lng Al v Fe2O3 trong hn hp ban u ln lt l (cho Al = 27, Fe = 56):

A. 5,4g v 8,0g.B. 2,7g v 10,7g.C. 8,1g v 5,3g.D. 10,8g v 2,6g

Cu 3. Ly 11 gam hn hp gm Al v Fe cho tc dng hon ton vi dung dch HCl long thu c 8,96 lit kh H2 (ktc). Phn trm khi lng ca Al v Fe trong hn hp ban u tng ng l: A. 49,09% v 50,91%. B. 36,82% v 63,18%.

C. 61,36% v 38,64%.

D. 73,64% v 26,36%.

Cu 4. Cho 2,2 gam hn hp Al v Fe trong s nguyn t Al gp i s nguyn t Fe, tc dng vi lng d dung dch mui clorua ca kim loi M ( M c ho tr II trong mui v ng sau Al, Fe trong dy in ho) thu c 5,12 gam cht rn. Cng thc mui ca kim loi M l:

A. Ni.

B. Pb.

C. Cu.

D. Hg

Cu 5. X l mt hirocacbon th kh. t chy hon ton X thu c th tch kh CO2 gp hai ln th tch hi nc. Nu t chy hon ton X bng mt th tch kh oxi dng d 20% th hn hp kh thu c sau khi lm ngng t hi nc s bng 2,5 ln th tch ca X em t.( cc th tch kh v hi o cng iu kin to, p) Cng thc ca X l cht no sau y:

A. C2H4.

B. C4H4.

C. C3H4.

D. C2H2.

Cu 6. Ho tan 10 gam hn hp Cu2S v CuS bng 200 ml dung dch KMnO4 0,75M trong mi trng axit H2SO4. Sau khi un si ui ht kh SO2 sinh ra, lng KMnO4 cn d phn ng va ht vi 175 ml dung dch FeSO4 1M. Khi lng CuS trong hn hp ban u l:

A. 4 gam.

B. 5 gam.

C. 6 gam.

D. 7 gam.

Cu 7. C cc dung dch sau ng trong cc l mt nhn : NaHSO4, Na2CO3, AlCl3, FeCl3, NaNO3, Ca(NO3)2 Ch cn dng thm mt ho cht lm thuc th, c th nhn bit c tng dung dch trn. Ho cht l ho cht no sau y ?

A. dung dch Ba(OH)2

B. dung dch MgCl2

C. dung dch KOH

D. phenolphtalein.

Cu 8. Ho tan ht 2,2 gam hn hp Al v Fe bng dung dch HNO3 long thu c dung dch Y v 448 ml kh (ktc) gm N2O v N2 c t khi so vi hiro bng 18. Khi lng Fe c trong hn hp l: A. 0,56g

B. 1,12g

C. 0,84g

D.1,68g

Cu 9. Cho 3,584 lt (ktc) hn hp gm mt ankan (X), mt anken (Y), mt ankin (Z). Ly hn hp cho tc dng vi dung dch AgNO3 d trong amoniac thy th tch hn hp gim 12,5% v thu c 1,47 gam kt ta. Cho hn hp cn li i qua dung dch brom d thy khi lng bnh brom tng 2,22 gam v c 13,6 gam brom phn ng. t chy hon ton lng kh i ra khi bnh brom ri hp th ton b sn phm chy vo dung dch Ba(OH)2 d th thu c 2,955 gam kt ta. Cc cht X, Y, Z ln lt l:

A. CH4, C2H4, C2H2.

B. C3H8, C2H4, C3H4.

C. C3H8, C2H4, C2H2.

D. CH4, C2H4, C3H4.

Cu 10. Cho hn hp kh X (ktc) gm 2 anken l ng ng k tip nhau tc dng vi H2O (xt, to) ri tch ly ton b ru to thnh. Chia hn hp ru thnh 2 phn bng nhau. Phn 1

tc dng ht vi Na to ra 420 ml kh H2 (ktc). t chy hon ton phn 2 thu c CO2 c khi lng nhiu hn khi lng H2O l 1,925 gam. Cng thc cc ru l:

A. C2H5OH v C3H7OH

B. C3H7OH v C4H9OH

C. C4H9OH v C5H11OH

D. CH3OH v C2H5OH

Cu 11. Trn ln 30 ml dung dch HCl a mol/l vi 50 ml dung dch Ba(OH)2 c pH = 12,5 c dung dch X c pH = 10. Nng mol ca dung dch HCl : a c gi tr bng:

A. 0,0524M.

B. 0,5240M

C. 0,2524M

D. 0,0254M.

Cu 12. Cho cc cht sau : CH2=CH-Cl (1) ; CH3-CH2-Cl (2) ; CH2=CH-CH=O (3) ;

CH3-CH=O (4). phn cc phn t c sp xp theo chiu gim dn nh sau :

A. 1, 2, 3, 4

B.3, 4, 2, 1

C. 3, 4, 1, 2

D. 4, 3, 2, 1.

Cu 13. t chy hn hp kh X gm H2S v 6,72 lt kh O2. Lm lnh hn hp sau phn ng ngng t ht hi nc thy cn li 5,6 lt kh Y. Th tch kh SO2 trong Y l (bit phn ng xy ra hon ton, cc th tch kh o ktc ; S = 32 ; O = 16 ; H = 1):

A. 4,48 lit B. 3,36 lt C. 3,36 lt hoc 2,24 lt D. 4,48 lit hoc 2,24 lt

Cu 14. Ho cht T l mt cht bt mu trng, bit rng T ch c th l mt trong cc ho cht sau :

MgCl2, CaCO3, BaCl2, CaSO4. xc nh T l ho cht no c th dng thuc th no sau y ?

A. H2O v HCl.B. H2O v NaOH.C. H2O v HNO3.D. H2O v H2SO4.

Cu 15. Ho tan 14,3 gam Na2CO3.10H2O vo 85,7 gam nc c dung dch X. Cho rng khi lng ring ca nc l 1g/ml v th tch ca nc l th tch dung dch. Nng % v khi lng ring ca dung dch X ln lt bng :

A. 5,3 % v 1,06 g/ml.

B. 5,3 % v 1,17 g/ml.

C. 14,3 % v 1,06 g/ml.

D. 14,3 % v 1,17 g/ml.

Cu 16. Mt hn hp kh gm CO2 v kh X, trong CO2 chim 82,5% khi lng cn X chim 25% th tch. Bit hn hp kh ny c kh nng lm mt mu dung dch brom v dung dch thuc tm. Kh X l cht kh no sau y ?

A. CO.

B. NO

C. C2H2.

D. C2H4.

Cu 17. Mt hn hp gm Al2(SO4)3 v K2SO4, trong s nguyn t oxi chim 20/31 tng s nguyn t c trong hn hp. Ho tan hn hp trn vo nc ri cho tc dng vi dung dch BaCl2 d, hi khi lng kt ta thu c gp bao nhiu ln khi lng hn hp ban u:

A. 1,488 ln

B. 1,588 ln

C. 1,688 ln

D. 1,788 ln

Cu 18. Ho tan hon ton FeS2 vo cc cha dung dch HNO3 long c dung dch X v kh NO thot ra. Thm bt Cu d v axit sunfuric vo dung dch X, c dung dch Y c mu xanh, nhng khng c kh thot ra. Cc cht tan c trong dung dch Y l:

A. Cu(NO3)2 ; Fe(NO3)3 ; H2SO4.

B. Cu(NO3)2 ; Fe(NO3)2 ; H2SO4.

C. CuSO4 ; Fe2(SO4)3 ; H2SO4.

D. CuSO4 ; FeSO4 ; H2SO4.

Cu 19. C 3 gi bt trng khng ghi nhn, mi gi cha ring r hn hp 2 cht sau : NaCl v KCl ; Na2CO3 v K2CO3 ; MgSO4 v BaCl2. Ngi ta ch dng 1 ho cht l c th nhn ra c 3 gi bt trng trn. Ho cht no trong cc ho cht sau khng dng phn bit c 3 gi bt trng trn:

A. dung dch HCl

B. dung dch Ba(OH)2

C. dung dch H2SO4

D. H2O.

Cu 20. Cho 3,8 gam hn hp gm cc kim loi Mg, Al, Zn, Cu tc dng hon ton vi oxi d thu c hn hp X c khi lng 5,24 gam. Th tch (ti thiu) dung dch HCl 0,5M cn dng ho tan hon ton X l:

A. 180 ml

B. 360 ml

C. 240 ml

D. 480 ml.

Cu 21. Cho mt lng bt CaCO3 tc dng hon ton vi dung dch HCl 32,85%, sau phn ng thu c dung dch X trong nng HCl cn li l 24,2% v CaCl2 l a%. Gi tr ph hp ca a l:

A. 10,51%

B.11,51%

C. 11,09%

D. 10,09%

Cu 22. Hn hp Z gm 2 axit no n chc k tip nhau trong dy ng ng. t chy hon ton mt lng hn hp Z thu c CO2 c khi lng ln hn khi lng H2O l 2,73 gam. Nu ly cng mt lng hn hp Z nh trn cho tc dng vi NaOH va th sau phn ng thu c lng mui khan l 3,9 gam. Cng thc 2 axit l:

A. HCOOH v CH3COOH

B. CH3COOH v C2H5COOH

C. C2H5COOH v C3H7COOH

D. C3H7COOH v C4H9COOH

Cu 23. Cho mt lng ru Y i vo bnh ng Na d, sau khi phn ng hon ton, thy khi lng bnh tng 6,0 gam v c 2,24 lt kh H2 (ktc) thot ra. Ru Y l ru no sau y ?

A. C2H5OH

B. C3H5(OH)3

C. C2H4(OH)2

D. C3H7OH

Cu 24. t chy hon ton 1,8 gam ru no Z thu c 1,8 gam nc. Bit MZ < 100. S cng thc cu to c th c ca Z l: A. 3.

B. 6.

C. 5.

D. 7.

Cu 25. Cho 3,1 gam ancol(ru) X tc dng vi Na d, sinh ra 5,3 gam ancolat. Cng thc ru X l:

A. C2H5OH

B. C3H5(OH)3

C. C2H4(OH)2

D. C3H7OH

Cu 26. Cho s sau:

X + H2 (Y ; X + O2 ( Z ; Y + Z ( C4H4O4 + 2H2O. Cc cht Y, Z l

A. Y : CH3OH ; Z : C2H2O4

B. Y : C2H4(OH)2 ; Z : H2CO2

C. Y : C2H5OH ; Z : C2H2O4

D. Y : C2H4(OH)2 ; Z : C2H2O4

Cu 27. Cho mt lung kh CO i qua ng s ng 0,04 mol hn hp X gm FeO v Fe2O3 t nng. Kt thc th nghim, thu c hn hp Y gm 4 cht, nng 4,784 gam. Kh i ra khi ng s c hp th vo dung dch Ca(OH)2 d th thu c 4,6 gam kt ta. Phn trm khi lng ca FeO trong X l:

A. 10,40%

B. 13,04%

C. 89,60%

D. 86,96%

Cu 28. Chia 22 gam hn hp 2 ru no n chc l ng ng k tip thnh 2 phn bng nhau :

Cho phn 1 tc dng ht vi Na thu c 3,36 lt kh H2(ktc). t chy hon ton phn 2 to ra V lt kh CO2 v m gam H2O. Vy gi tr ca V v m tng ng vi gi tr no sau y:

A. 8,96 lit ; 12,6 gB. 6,72 lit ; 10,8 gC. 11,2 lit ; 12,6 gD. 8,96 lit ; 10,8 g

Cu 29. Cho 13,92 gam oxit st t tc dng vi dung dch HNO3 thu c 0,448 lt kh NxOy (ktc).

Khi lng HNO3 tham gia phn ng l:

A. 34,02 gam B. 35,28 gam

C. 11,34 gam

D. 31,50 gam.

Cu 30. Cho 18,56 gam mt oxit st tc dng ht vi dung dch HNO3 to ra 0,224 lt kh(ktc) mt oxit ca nit. Cng thc ca oxit st v oxit nit ln lt l:

A. Fe2O3 v N2OB. Fe3O4 v NO2C. Fe2O3 v NOD. Fe3O4 v N2O

Cu 31. X v Y c cng cng thc phn t C3H8O v cng phn ng c vi Na. Oxi ho nh X v Y bi CuO un nng, thu c X1 v Y1 tng ng trong Y1 cho phn ng trng gng cn X1 khng c phn ng ny. Tn ca X v Y tng ng l:

A. propanol-1 v propanol-2

B. propanol-2 v propanol-1

C. propanol-1 v propanal

D. etylmetylete v propanol-1

Cu 32. Chia dung dch c ho tan 4,14 gam mui R2CO3 (R l mt kim loi kim) thnh 2 phn bng nhau. Cho 160 ml dung dch HCl 0,2M vo phn 1 th sau phn ng axit vn cn d. Cho dung dch BaCl2 vo phn 2, lc c 2,561 gam kt ta. R2CO3 l mui no sau y,

bit cc phn ng xy ra hon ton ? (cho Ba = 137, Li = 7, Na = 23, K = 39, Rb = 85, Cs = 133, C = 12, O = 16):

A. Rb2CO3

B. Cs2CO3

C. Na2CO3

D. K2CO3

Cu 33. Cho 20,7 gam hn hp CaCO3 v K2CO3 phn ng ht vi dung dch HCl d, thu c kh Y. Sc ton b kh Y t t vo dung dch ch cha 0,18 mol Ba(OH)2, thu c m gam kt ta. Hi m c gi tr trong khong no:

A. 35,46 m 29,55

B. 35,46 m > 29,55

C. 35,46 m 30,14

D. 35,46 m > 0

Cu 34. Cht hu c Y1 trong phn t ch cha mt loi nhm chc, c phn trm khi lng C v H tng ng bng 49,315% v 6,85%, cn li l oxi. T khi hi ca Y1 so vi khng kh xp x bng 5,034. Cho Y1 tc dng vi dung dch NaOH, sinh ra mt mui (Y2) v mt ru (Y3). Nung mui Y2 vi hn hp vi ti xt thu c mt hirocacbon n gin nht. Cng thc Y2 v Y3 ln lt l:

A. HCOONa v HOCH2CH2CH2CH2OHB. CH3CH2COONa v CH3CH2CH2OH

C. CH3COONa v HOCH2CH2OH

D. NaOOCCH2COONa v CH3OH.

Cu 35. Thc hin phn ng x phng ho hn hp vinyl axetat v phenyl axetat bng dung dch NaOH d, un nng. Sn phm thu c ngoi natri axetat cn c:

A. ru vinylic v ru benzylic.

B. axetandehit v natri phenolat.

C. axetandehit v phenol.

D. ru vinylic v phenol.

Cu 36. t chy hon ton 7,7 gam cht hu c Z (c cng thc phn t trng vi cng thc n gin nht) bng oxi, thu c 6,3 gam H2O, 4,48 lt CO2, 1,12 lt N2 (cc kh o ktc). Cho Z phn ng vi dung dch NaOH un nng, c kh Z1. Kh Z1 lm xanh giy qu tm m v khi t chy Z1 thu c sn phm lm c nc vi trong. Cng thc cu to ca Z l cng thc no sau y:

A. HCOOH3NCH3B. CH3COONH4C. CH3CH2COONH4D. CH3COOH3NCH3

Cu 37. Hn hp R gm Fe2O3, CuO, CaO c t l s mol tng ng l 1:2:3. Dn 14 lt kh CO (ktc) i vo ng s ng R nung nng n phn ng hon ton, c kh T c t khi so vi hiro bng 20,4 v cht rn X. Phn trm khi lng cc cht rn trong X:

A. 27,45% Fe ; 31,37% Cu ; 41,18% CaOB. 41,18% Fe ; 31,37% Cu ; 27,45% CaO

C. 35,56% Fe ; 31,11% Cu ; 33,33% CaD. 31,11% Fe ; 35,56% Cu ; 33,33% Ca

Cu 38. Z l este to bi ru metylic v axit cacboxylic Y n chc, mch h, c mch cacbon phn nhnh. X phng ho hon ton 0,6 mol Z trong 300 ml dung dch KOH 2,5M un nng, c dung dch E. C cn dung dch E c cht rn khan F. t chy hon ton F bng oxi d, thu c 45,36 lt kh CO2 (ktc), 28,35 gam H2O v m gam K2CO3. Cng thc cu to ca Y v gi tr ca m l:

A. CH3CH(CH3)COOH ; m = 51,75g

B. CH2=C(CH3)COOH ; m = 51,75g.

C. CH3CH(CH3)COOH ; m = 41,40g

D. CH2=C(CH3)COOH ; m = 41,40g.

Cu 39. Cho cht v c X tc dng vi mt lng va KOH, un nng, thu c kh X1 v dung dch X2. Kh X1 tc dng vi mt lng va CuO nung nng, thu c kh X3, H2O, Cu. C cn dung dch X2 c cht rn khan X4 (khng cha clo). Nung X4 thy sinh ra kh X5 ( M=32vC). Nhit phn X thu c kh X6 (M= 44vC) v nc. Cc cht X1, X3, X4, X5, X6 ln lt l:

A. NH3 ; NO ; KNO3 ; O2 ; CO2

B. NH3 ; N2 ; KNO3 ; O2 ; N2O

C. NH3 ; N2 ; KNO3 ; O2 ; CO2

D. NH3 ; NO ; K2CO3 ; CO2 ; O2.

Cu 40. iu khng nh no sau y khng ng:

A. Phn ng NH4NO3 + KOH KNO3 + NH3 + H2O dng iu ch NH3 trong PTN

B. Phn ng 2NH3 + 3CuO 3Cu + N2 + 3H2O dng minh ho tnh kh ca NH3C. Phn ng 2KNO3 2KNO2+ O2 dng iu ch O2 trong PTN

D. Phn ng NH4NO3 2H2O + N2O dng iu ch N2O trong cng nghip.

Cu 41. Cht X (C8H14O4) tho mn s cc phn ng sau:

a) C8H14O4 + 2NaOH (X1 + X2 + H2O. b) X1 + H2SO4 ( X3 + Na2SO4

c) nX3 + nX4 ( Nilon-6,6 + nH2O d) 2X2 + X3 (X5 + 2H2O

Cng thc cu to ca X (C8H14O4 ) l

A. HCOO(CH2)6 OOCH

B. CH3OOC(CH2)4COOCH3

C. CH3OOC(CH2)5COOH D. CH3CH2OOC(CH2)4COOH

Cu 42. t chy hon ton 0,1 mol ru no, mch h X cn va 5,6 lt oxi (ktc). X cng vi axit

HOOCC6H4COOH l 2 monome c dng iu ch polime, lm nguyn liu sn xut t:

A. Nilon-6,6

B. Capron

C. Lapsan

D. Enang.

Cu 43. Nung 6,58 gam Cu(NO3)2 trong bnh kn, sau mt thi gian thu c 4,96 gam cht rn v hn hp kh X. Hp th hon ton hn hp X vo nc, c 300 ml dung dch Y. Dung dch Y c pH l:

A. pH = 1

B. pH = 2

C. pH = 3

D. pH = 4

Cu 43. Cho 3,84 gam hn hp oxit st vo bnh kn cha 2,912 lt kh CO ( ktc) nung nng n phn ng hon ton c Fe v kh A c t khi so vi H2 bng 18. Mt khc, ho tan hon ton 3,84 gam hn hp trn bng H2SO4 c nng, d th thu c V ml kh SO2 ( ktc). V c gi tr l:

A. 112 ml.

B. 224 ml.

C. 336 ml.

D. 448 ml.

Cu 44. Phn ng Cu + 2FeCl3 CuCl2 + 2FeCl2 cho thy:

A. ng kim loi c tnh kh mnh hn st kim loi.

B. ng c th kh Fe3+ thnh Fe2+.

C. ng kim loi c tnh oxi ho km st kim loi.

D. St kim loi b ng y ra khi dung dch mui.

Cu 45. Hp cht X to bi 3 nguyn t. Nhit phn X thu c hn hp 2 cht kh v hi c t khi so vi nhau bng 0,642. Cng thc phn t no sau y c coi l hp l i vi X:

A. NH4Cl

B. NH4NO2.

C. NH4NO3

D. Cu(NO3)2 .

Cu 46. Bn hirocacbon u l cht kh iu kin thng. Khi phn hu hon ton mi cht trn thnh cacbon v hiro, th tch kh thu c u gp i th tch hirocacbon ban u. Vy bn cht trn:

A. u l ankan. B. u l anken. C. u l ankin. D. u c 4H trong phn t.

Cu 47. Hn hp X gm K v Zn c khi lng 14,3 gam, tan ht trong mt lng nc d to ra dung dch Y ch cha mt cht tan duy nht v kh H2 (ktc). Khi lng K v th tch H2 to ra l: A. 3,9g v 2,24ltB. 7,8g v 2,24ltC. 7,8g v 4,48ltD. 7,8g v 1,12lt.

Cu 48. Ho tan hon ton 9,94 gam hn hp Al, Fe, Cu trong dung dch HNO3 long d, thy thot ra

3,584 lt kh NO ( ktc ; l sn phm kh duy nht). Tng khi lng mui to thnh l:

A. 39,7g.

B. 37,3g

C. 29,7g

D.27,3g

Cu 49. t chy hon ton mt hirocacbon X thu c < . iu khng nh no sau y ng ?

A. X ch c th l ankin hoc ankaienB. X ch c th l ankin hoc xicloankan

C. X c th l ankin, xicloanken, ankaienD. X ch c th l ankin hoc xicloanken

Cu 50. Ho tan 10,8 gam Al trong mt lng axit H2SO4 va thu c dung dch X. Thm V lt dung dch NaOH 0,5M vo dung dch X c kt ta m sau khi nung n khi lng khng i cho ra mt cht rn c khi lng 10,2 gam. Gi tr ca V l:

A. 1,2 lt

B. 1,2 hoc 1,6 ltC. 1,2 hoc 2,8 ltD. 1,2 hoc 2,4 lt

P N

1234567891011121314151617

BAACDCDBBAABDDADC

2122232425262728293031323334353637

ABCBCDBABDBDBCBAA

41424344454647484950181920383940

DCABBDCACC

NTT

THI TH I HC 2009-2010

MN :HA HC

S :0 8

Cu 1: Nhn nh no sau y v HNO3 l khng ng?

A. Axit nitric l cht lng d tan trong nc v d bay hi.

B. Axit nitric th hin tnh axit mnh khi tc dng vi baz, oxit baz, kim loi

C. Axit nitric c tnh oxihoa mnh, l tnh cht ca NO3- trong dung dch axit.

D. Axit nitric c thng c mu vng l do HNO3 km bn, phn hu to thnh NO2.

Cu 2: Cu no sau y sai ?

A. Lin kt trong a s tinh th hp kim vn l lin kt kim lai

B. Kim lai c tnh cht vt l chung: tnh do, tnh dn in, dn nhit, c nh kim

C. iu ch Mg, Al ngi ta dng kh H2 hoc CO kh oxit kim loi tng ng nhit cao

D. Cc thit b my mc bng st tip xc vi hi nc nhit cao c kh nng b n Mn ha hc.

Cu 3: Cho hn hp X gm oxi v clo tc dng ht vi hn hp Y gm 4,80 g magie v 8,10 g nhm to thnh 37,05 g hn hp cc oxit v mui clorua ca hai kim loi. Phn trm th tch ca oxi trong X l: (Bit: O=16; Cl=35,5; Mg=24; Al=27) A. 44,44%. B. 55,56%.C. 56,55%.D. 43,45%.

Cu 4: Gi s H c 3 ng v, S c 1 ng v, O c 3 ng v. S phn t H2SO3 c th c l:

A. 72 B. 90C. 60 D. 36

Cu 5: Cho CO2 li t t vo dung dch cha KOH v Ca(OH)2, c th xy ra cc phn ng sau:

1. CO2 + 2KOH ( K2CO3 + H2O 2. CO2 + Ca(OH)2 ( CaCO3 + H2O

3. CO2 + K2CO3 + H2O ( 2KHCO3 4. CO2 + CaCO3 + H2O (Ca(HCO3)2

Th t cc phn ng xy ra l:

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

Cu 6: Cu hnh electron ng ca nguyn t nguyn t Cu (Z = 29) l:

A. 1s22s22p63s23p63d94s2. B. 1s22s22p63s23p63d104s1C. 1s22s22p63s23p63d64s24p3 D. 1s22s22p63s23p64s33d8.

Cu 7: Supephtphat kp c thnh phn chnh l:

A. Ca3(PO4)2.B. CaHPO4 .

C. Ca(H2PO4)2.D. Ca(H2PO4)2; CaSO4

Cu 8: Sau khi cn bng phng trnh phn ng: FexOy + HNO3 ( Fe(NO3)3 + NO + H2O, theo t l h s nguyn, n gin nht, th tng h s ca HNO3 v NO l:

A. 15x - 4y. B. 12x- 3y.C. 9x-3y. D. 18x- 5y.

Cu 9: Trong cng nghip HCl c th iu ch bng phng php sulfat theo phng trnh phn ng: 2NaCl (tinh th) + H2SO4 (c) 2HCl + Na2SO4

Ti sao phng php ny khng c dng iu ch HBr v HI ?

A. Do tnh axit ca H2SO4 yu hn HBr v HI. B. Do NaBr v NaI t tin, kh kim

C. Do HBr v HI sinh ra l cht c. D. Do Br-, I- c phn ng vi H2SO4 c, nng.

Cu 10: Ho tan hon ton 12 gam hn hp X gm Fe v Cu bng dung dch HNO3 d, kt thc th nghim thu c 6,72 lt (ktc) hn hp kh Y gm NO v NO2 c khi lng 12,2 gam. Khi lng mui nitrat sinh ra l: (Bit: Fe=56; Cu=64; H=1; O=16; N=14)

A. 30,6 gam. B. 39,9 gam. C. 43,0 gam. D. 55,4 gam.Cu 11: Ngm mt thanh kim loi M c khi lng 50 gam trong dung dch HCl. Sau phn ng thu c 336 ml H2 (ktc) v thy khi lng l kim loi gim 1,68% so vi ban u. Kim loi M l: (Bit: H=1; Fe=56; Mg=24; Al=27; Zn=65; Cl=35,5).

A. Mg. B. Al. C. Zn.D. Fe

Cu 12: Khi in phn dung dch mui trong nc tr s pH khu vc gn mt in cc tng ln, th dung dch mui em in phn l:

A. K2SO4. B. KClC. CuSO4D. AgNO3.

Cu 13: Hp cht no sau y trong phn t ch c lin kt cng ha tr ?

A. H2SO4 . B. KNO3 .C. NH4Cl .D. CaO.

Cu 14: ng vi cng thc phn t C5H8, s cht ng phn mch h ti a c th c l:

A. 10. B. 11.C. 9.D. 8.

Cu 15: Hn hp X gm H2 v mt an ken i xng. T khi hi ca X so vi H2 bng 9,1. un nng X c xc tc Ni thu c hn hp Y khng lm mt mu dd brm, t khi hi ca Y so vi H2 l 13. Cng thc cu to ca X l: (Bit: H=1; C=12)

A. CH2=CH2. B. CH2=CH-CH2-CH3.

C. CH3-C(CH3)=C(CH3)-CH3. D. CH3 -CH=CH-CH3.

Cu 16: Cc loi t c ngun gc xenluloz l:

A. Si bng, t tm, t nilon 6,6. B. T tm, len, t visco.

C. Si bng, t visco, t capron. D. T axetat, si bng, t visco.

Cu 17: Khi un nng hn hp gm cc ng phn aminoaxit ca C3H7O2N, s tripeptit c th to thnh l: A. 5.B. 8.C. 7.D. 6.

Cu 18: Cc gluxit va to c kt ta vi dd Ag2O/NH3, va ho tan c Cu(OH)2, va cng hp vi H2 xc tc Ni v un nng l:

A. Saccaroz v fructz .B. Saccaroz v mantoz .

C. Amilz v glucoz.D. Glucoz v fructoz .

Cu 19: un nng hn hp xenluloz vi HNO3 c v H2SO4 c, thu c hn hp sn phm gm hai cht hu c c s mol bng nhau, c % khi lng ca N trong bng 9,15%. Cng thc ca hai cht trong sn phm l: (Bit: H=1; N=14; O=16; C=12)

A. [C6H7(OH)3]n , [C6H7(OH)2NO3]n B. [C6H7(OH)2NO3]n, [C6H7OH(NO3)2]n.

C. [C6H7OH(NO3)2]n, [C6H7(NO3)3]n. D. [C6H7(OH)2NO3]n, [C6H7(NO3)3]n.

Cu 20: Cho cc cht sau: C2H5O-H (1), CH3CO(O-H) (2), HCO(O-H) (3), C6H5O-H (4),

R-C=CH-H (5), R-CC-H (6)

Chiu tng dn linh ng ca cc nguyn t H trong cc nhm chc ca cc cht trn l:

A. 1 < 4 < 3 < 2 < 5 < 6.B. 5 < 6 < 1 < 4 < 2 < 3.

C. 4 < 1 < 3 < 2 < 6 < 5.D. 6 < 5 < 4 < 1< 2 < 3.

Cu 21: t chy hon ton mt lng cht hu c X thu c sn phm ch gm 3,15g nc; 6,60g ccbnc v 0,56 lit nit. Lng oxi cn dng t chy X bng 4,2 lit (kh o ktc). Khi tc dng vi dd NaOH thu c sn phm c mui H2N-CH2-COONa. Cng thc ca X l: (Bit: C=12; H=1; O=16; Na=23; N=14)

A. H2N- CH2-COOH.B. CH3-CH(NH2)-COOH.

C. H2N -CH2-COO-C2H5.D. H2N-CH2-COO-CH3.

Cu 22: Tin hnh trng hp butadien-1,3 c th th c bao nhiu loi polime ?

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

Cu 23: Trong cc phn t polime: polivinylclorua, xenluloz, tinh bt (amilopectin), cao su lu ha, nha phenolfomandehit, polistiren, nhng phn t polime c cu to mch nhnh v mng l A. Xenluloz, amilopectin, polistirenB. Amilopectin, cao su lu ha, nha phenolfomandehit.

C. Polistiren, polivinyl clorua, xenluloz.

D. Xenluloz, polivinyl clorua, nha phenolfomandehit.

Cu 24: Trong s cc ru cng thc phn t C6H14O, s ru c th loi nc ni phn t to ra sn phm ti a ch cha hai an ken ng phn l:

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

Cu 25: Phenol khng tc dng vi cht no sau y?

A. Na. B. HCl.C. NaOH.D. dung dch Br2.

Cu 26: Tm kt lun khng ng cu sau y: Do trong phn t axit focmic va c chc axit, va c chc andehit nn axit focmic tham gia phn ng vi:

A. H2 xt Ni, t0. B. K2ZnO2.C. Ag2O/NH3.D. Zn.

Cu 27: Cho hn hp hai ru no, n chc mch h k tip nhau trong dy ng ng tc dng vi Na d thu c 14,65g hn hp mui khan v 2 lit H2 270C, 1,23 atm. Hai ru c tn l: (Bit:H=1; C=12; O=16; Na=23)

A. ru amylc v butylc. B. ru prpylic v butylc.

C. ru etylc v prpylc. D. ru metylc v etylc.

Cu 28: Hn hp X gm metanal v etanal. Khi oxi ha (H = 100%) m gam hn hp X thu c hn hp Y gm hai axit hu c tng ng c d Y/X = x. Gi tr ca x trong khong no sau y ? (Bit: O=16; H=1; C=12 )

A. 1 < x < 1,36. B. 1,36 < x < 1,53. C. 1,53 < x < 1,62.D. 1,62 < x < 1,75.

Cu 29: un nng 0,1 mol X vi lng va dung dch NaOH thu c 13,4 gam mui ca axit hu c a chc Y v 9,2 gam ru n chc Z. Cho ru Z bay hi th thu c th tch l 4,48 lt (qui v ktc). Cng thc ca X l: (Bit: O=16; H=1; C=12; Na=23)

A. CH(COOCH3)3 .B. CH3CH2OOC COOCH2CH3C. C2H5OOC CH2 COOC2H5 .D. C2H5OOC CH2 CH2 COOC2H5.Cu 30: phn bit du thc vt v du bi trn my ngi ta c th dng thuc th l:

A. Cu(OH)2.B. Kim loi Na v Cu(OH)2.

C. DD CuSO4 v DD NaOH.D. DD NaOH v CuO.

Cu 31: un nng axit axetic vi ru iso-amylic (CH3)2CHCH2CH2OH c H2SO4 c xc tc thu c iso-amyl axetat (du chui). Bit hiu sut phn ng t 68%. Lng du chui thu c t 132,35 gam axit axetic un nng vi 200 gam ru iso-amylic l: (Bit: O=16; H=1; C=12 )

A. 295,5 gam. B. 286,7 gam.C. 200,9 gam.D. 195,0 gam.

Cu 32: Amoniac phn ng vi tt c cc cht trong dy sau:

A. H2SO4, PbO, FeO, NaOH . B. HCl, KOH, FeCl3, Cl2C. NaHSO4, O2, Cl2, ZnCl2 . D. KNO3, CuCl2, H2S, Al(OH)3Cu 33: nhn bit c 4 kim loi: Ag, Na, Mg v Al. ch cn dng ha cht no sau y?

A. H2O. B. dd NaOH long. C. dd HCl long

Cu 34: Cho t t kim loi M vo dd (NH4)2SO4 n d, thy c hn hp kh bay ra v thu c dd trong sut . Kim loi M l: A. Ba B. Fe. C. Na.D. Mg.

Cu 35: Trong cc cp cht cho di y, cp cht no c th cng tn ti trong mt dung dch?

A. AlCl3 v CuSO4 . B. NaHSO4 v NaHCO3 .C. Na2ZnO2 v HCl. D. NH3 v AgNO3.

Cu 36: T cc cht ban u l KMnO4, CuS, Zn, dd HCl c th iu ch trc tip c bao nhiu cht trng thi kh iu kin thng? A. 3. B. 4. C. 5.D. 6.

Cu 37: Cho 6,72 lt kh CO2 ktc hp th han tan vo V ml dd Ba(OH)2 0,9M, thu c m gam kt ta v dd cha 19,425 g mt mui ccbonat. Gi tr V l: (Bit: O=16; H=1; Ba=137; C=12)

A. 255ml. B. 250ml. C. 252ml.D. 522ml.

Cu 38: C cc dd cha cc cht HCOOH, C2H3COOH, HCOOCH3, C2H3COOCH3 ring bit. Dng cp cht no sau y nhn bit c chng?

A. CaCO3, qu tm . B. dd Br2, dd Ag2O/NH3. C. dd Ag2O/NH3, Zn.D. dd NaOH, dd Br2.

Cu 39: thc hin bin ha: toluen ( X ( Y ( p-crezol , ta phi dng thm nhng ha cht thuc nhm no sau y (k c cht lm xc tc)?

A. HNO3 c, H2SO4 c, NaOH. B. Fe, CO2, dd KOH c, Br2.

C. Cl2, HCl, NH3, dd NaOH. D. Fe, HCl, NaOH, HNO3 c.

Cu 40: X l hp cht hu c thun chc c t khi hi so vi oxi bng 4,125. Trong X, oxi chim 48,48% v khi lng. Bit X khng tc dng vi Na, nhng tc dng vi dd NaOH sinh ra ch mt ru v hn hp hai mui. Cng thc ca X l: (Bit: O=16; H=1; C=12 )

A. HCOO-CH2-CH2-COO-CH3. B. HCOO-CH2-CH2-OOC-CH3.

C. HCOO-CH2-CH2-OOC-C2H5. D. CH3-COO-CH2-CH(OOCH)-CH2-OOC-CH3.

Cu 41: Trong phn ng thu phn este xc tc axit, tng hiu sut ca phn ng thu phn th dng xc tc l:

A. dd NH3. B. dd H2S. C. dd H2SO4 long.D. dd H2SO4 c.

Cu 42: Hn hp M gm axit X, ru Y v este Z c to ra t X v Y, tt c u n chc; trong s mol X gp hai ln s mol Y. Bit 17,35 g M tc dng va vi dd cha 0,2 mol NaOH, ng thi thu c 16,4 g mui khan v 8,05 g ru . Cng thc X, Y, Z l: (Bit: O=16; H=1; C=12;Na=23)

A. HCOOH, CH3OH, HCOOCH3. B. CH3COOH, CH3OH, CH3COOCH3.

C. CH3COOH, C2H5OH, CH3COOC2H5. D. HCOOH, C3H7OH, HCOOC3H7.

Cu 43: C 4 dung dch: lng trng trng, glixerin, glucoz, h tinh bt c th dng thuc th duy nht no sau y phn bit c cc dung dch ?

A. AgNO3/NH3. B. HNO3/H2SO4 C. Cu(OH)2/OH .D. I2/CCl4.

Cu 44: S ph hy kim loi theo c ch n mn in ha xy ra nhanh hn n mn ha hc l do

A. n mn in ha khng phi l phn ng oxihoa - kh cn n mn ha hc l phn ng oxihoa-kh .

B. n mn in ha tiu thu nng lng in cn n mn ha hc khng pht sinh dng in .

C. cc qu trnh oxihoa - kh ca n mn in ha xy ra hai in cc cn ca n mn ha hc xy ra cng mt thi im

D. n mn in ha xy ra trong dung dch in li cn n mn ha hc ch xy ra vi cc cht kh hoc hi nc nhit cao

Cu 45: Gii thch ng v y nht v nguyn nhn ti sao cc kim loi kim c nhit nng chy, cng thp nht so vi tng chu k l

A. Kim lai kim c m in nh nht tng chu k, c kiu mng tinh th lng tr lc gic u.

B. Chng c bn knh ion ln nht, in tch ion nh nht, d b ion ha nht so tng chu k; c mng tinh th lp phng tm din .

C. Chng c bn knh ion ln nht, in tch ion v s electron ha tr t do nh nht so tng chu k; c cu to tinh th rng nht.

D. Chng c bn knh ion nh nht, in tch ion v s electron ha tr t do nh nht so tng chu k; c mng tinh th lp phng tm khi.

Cu 46: Khi tch nc n phn t ru no n chc k tip nhau, thu c hn hp gm x phn t ete khc nhau. Bit tng khi lng mol phn t ca x ete l 612 g; khi lng mol ca tng ru nh hn 102. Cng thc ca cc ru l: (Bit: O=16; H=1; C=12)

A. CH3OH; C2H5OH. B. C2H5OH; C3H7OH, C4H9OH.

C. C3H7OH; C4H9OH. D. C4H9OH; C5H11OH; C6H13OH.

Cu 47: tch loi cc cht kh: propin, etylen, metan ra khi hn hp ca chng, c th dng nhng ha cht thuc nhm no sau y: (cc phng tin khc coi nh c )

A. dd Br2, dd KOH/ ru v dd KMnO4. B. dd Br2, Zn v dd Ag2O/NH3.

C. dd HNO3 c v dd KOH. D. dd HCl, dd KOH/Ru v dd Ag2O/NH3.

Cu 48: Cht hu c X c 1 nhm amino, 1 chc este. Hm lng nit trong X l 15,73%. X phng ha m gam cht X, hi ru bay ra cho i qua CuO nung nng c andhit Y. Cho Y thc hin phn ng trng bc thy c 16,2 gam Ag kt ta. Gi tr ca m l: (Bit: O=16; H=1; C=12; Ag=108; N=14)

A. 7,725 gam. B. 3,3375 gam. C. 6,675 gam.D. 5,625 gam.

Cu 49: ng vi cng thc phn t C4H8O2, c a hp cht hu c n chc mch h v b hp cht c th tc dng c vi Ag2O/NH3 to thnh Ag. Gi tr ca a v b ln lt l:

A. 5; 1. B. 6; 2. C. 4; 1.D. 7; 2.

Cu 50: Cho 21,30 g P2O5 vo V lit dung dch NaOH 1M, thu c dung dch trong cha 38,20 g hn hp mui pht pht. Gi tr V l: (H=1, Na=23, O=16, P=31)

A. 0,40 lit . B. 1,00 lit . C. 0,60 lit .D. 0,44 lit .1. B6. B11. D16. D21. D26. A31. D36. A41. D46. B

2. C7. C12. B17. B22. C27. C32. C37. B42. C47. D

3. A8. A13. A18. 23. B28. B33. C38. 43. C48. B

4. C9. D14. A19. 24. A29. B34. C39. 44. C49. B

5. D10. C15. D20. 25. B30. C35. A40. 45. C50. A

NTT

THI TH I HC 2009-2010

MN :HA HC

S : 09

1: Cho cc nguyn t M (Z = 11), X (Z = 17), Y (Z = 9) v R (Z = 19). m in ca cc nguyn t tng dn theo th t

A. M < X < Y < R. B. M < X < R < Y. C. Y < M < X < R.D. R < M < X < Y.

2: Trong t nhin, nguyn t ng c hai ng v l v Cu. Nguyn t khi trung bnh ca ng l 63,54. Thnh phn phn trm tng s nguyn t ca ng v l

A. 73%. B. 50%. C. 54%.D. 27%.

3: Lu hunh trong SO2 lun th hin tnh kh trong cc phn ng vi:

A. H2S, O2, nc Br2. B. dung dch NaOH, O2, dung dch KMnO4.C. O2, nc Br2, dung dch KMnO4. D. dung dch KOH, CaO, nc

4: nhn ra cc kh CO2, SO2, H2S, N2 cn dng cc dung dch:

A. Nc brom v NaOH.B. NaOH v Ca(OH)2.

C. Nc brom v Ca(OH)2 .D. KMnO4 v NaOH.

5: Trong s cc dung dch: Na2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, C6H5ONa, nhng dung dch c pH > 7 l:

A. KCl, C6H5ONa, CH3COONa. B. Na2CO3, NH4Cl, KCl.

C. NH4Cl, CH3COONa, NaHSO4. D. Na2CO3, C6H5ONa, CH3COONa.

6: Khi cho 100ml dung dch KOH 1M vo 100ml dung dch HCl thu c dung dch c cha 6,525 gam cht tan. Nng mol (hoc mol/l) ca HCl trong dung dch dng l (Cho H = 1; O = 16; Cl = 35,5; K = 39) A. 0,75M. B. 0,5M.C. 0,25M.D. 1M.

7: C th dng NaOH ( th rn) lm kh cc cht kh

A. NH3, SO2, CO, Cl2. B. N2, NO2, CO2, CH4, H2.

B. C. NH3, O2, N2, CH4, H2.D. N2, Cl2, O2 , CO2, H2.

8: Ha tan hon ton 3,22 gam hn hp X gm Fe, Mg v Zn bng mt lng va dung dch H2SO4 long, thu c 1,344 lt hiro ( ktc) v dung dch cha m gam mui. Gi tr ca m l (Cho H = 1; O = 16; Mg = 24; S = 32; Fe = 56; Zn = 65)

A. 9,52. B. 7,25.C. 8,98.D. 10,27.

9: C phn ng: X + HNO3 ( Fe(NO(3)3 + NO+ H(2O

S cht X c th thc hin phn ng trn l: A. 3. B. 4.C. 5.D. 6

10: Nung hn hp A gm CaCO3 v CaSO3 ti phn ng hon ton c cht rn B c khi lng bng 50,4% khi lng ca hn hp A. Phn trm khi lng hai cht trn trong hn hp ln lt l:

A. 40% v 60%. B. 30% v 70%. C. 25% v 75%.D. 20% v 80%.

11: C 2 cht A v B ch cha chc axit cacboxylic:

+) Ly 1 mol A trn vi 2 mol B ri cho tc dng vi Na d, thu c 2 mol H2

+) Ly 2 mol A trn vi 1 mol B ri cho tc dng vi Na d, thu c a mol H2

Gi tr a l: A. 1mol. B. 1,5mol.C. 2,5mol.D. 3mol.

12: Hidro ha cht A (C4H6O) c ru n-butilic.S cng thc cu to mch h c th c ca A l:

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

13: Trong dy bin ha:

C2H6 ( C2H5Cl ( C2H5OH ( CH3CHO ( CH3COOH ( CH3COOC2H5 ( C2H5OH

S phn ng oxi ha kh l: A. 2. B. 3. C. 4. D. 5.14: Hn hp X gm N2 v H2 c M = 7,2 vC . Sau khi tin hnh phn ng tng hp NH3, c hn hp Y c M = 8 vC . Hiu sut phn ng tng hp l:

A. 10% B. 15%C. 20%.D. 25%.

15: Khi ha tan hiroxit kim loi M(OH)2 bng mt lng va dung dch H2SO4 20% thu c dung dch mui trung ho c nng 27,21%. Kim loi M l (Cho H = 1; O = 16; Mg = 24; S = 32; Fe = 56; Cu = 64; Zn = 65)

A. Mg. B. Zn. C. Cu.D. Fe.

16: Khi cho ankan X (trong phn t c phn trm khi lng cacbon bng 83,72%) tc dng vi clo theo t l s mol 1:1 (trong iu kin chiu sng) ch thu c 2 dn xut monoclo ng phn ca nhau. Tn ca X l (Cho H = 1; C = 12; Cl = 35,5)

A. butan. B. 2-metylpropan. C. 3-metylpentan.D. 2,3-imetylbutan

17: t chy hon ton mt ru (ancol) X thu c CO2 v H2O c t l s mol tng ng l 3 : 4. Th tch kh oxi cn dng t chy X bng 1,5 ln th tch kh CO2 thu c ( cng iu kin). Cng thc phn t ca X l

A. C3H8O2. B. C3H8O3. C. C3H8O.D. C3H4O.

18: Cho hn hp hai anken ng ng k tip nhau tc dng vi nc (c H2SO4 lm xc tc) thu c hn hp Z gm hai ru (ancol) X v Y. t chy hon ton 1,06 gam hn hp Z sau hp th ton b sn phm chy vo 2 lt dung dch NaOH 0,1M thu c dung dch T trong nng ca NaOH bng 0,05M. Cng thc cu to thu gn ca X v Y l (Cho: H = 1; C = 12; O = 16; th tch dung dch thay i khng ng k)

A. C2H5OH v C4H9OH.B. C2H5OH v C3H7OH.

C. C3H7OH v C4H9OH.D. C4H9OH v C5H11OH.

19: C bao nhiu ru (ancol) bc 2, no, n chc, mch h l ng phn cu to ca nhau m phn t ca chng c phn trm khi lng cacbon bng 68,18%? (Cho H = 1; C = 12; O = 16)

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

20: Cho 2,9 gam mt anehit phn ng hon ton vi lng d AgNO3 (hoc Ag2O) trong dung dch NH3 thu c 21,6 gam Ag. Cng thc cu to thu gn ca anehit l (Cho H = 1; C = 12; O = 16; Ag = 108)

A. HCHO. B. CH3CHO.C. CH2=CH-CHO.D. OHC-CHO.

21: Cho 5,76 gam axit hu c X n chc, mch h tc dng ht vi CaCO3 thu c 7,28 gam mui ca axit hu c. Cng thc cu to thu gn ca X l (Cho H = 1; C = 12; O = 16; Ca = 40)

A. HC(C-COOH. B. CH3COOH. C. CH2=CH-COOH.D. CH3-CH2-COOH.

22: Dn V lt ( ktc) hn hp X gm axetilen v hiro i qua ng s ng bt niken nung nng, n phn ng xong thu c kh Y. Dn Y vo lng d AgNO3 (hoc Ag2O) trong dung dch NH3 thu c 12 gam kt ta. Kh i ra khi dung dch phn ng va vi 16 gam brom v cn li kh Z. t chy hon ton kh Z thu c 2,24 lt kh CO2 ( ktc) v 4,5 gam nc. Gi tr ca V bng (Cho H = 1; C = 12; O = 16; Br = 80; Ag = 108)

A. 13,44. B. 5,60.C. 11,2.D. 8,96.23: Este X khng no, mch h, c