Bai Tap Chuong Oxi Hoa Khu
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Transcript of Bai Tap Chuong Oxi Hoa Khu
TRC NGHIM HO 10
PHN NG OXI HA KH 1. Dng 1: Cn bng phn ng oxi ha kh theo phng php thng bng e:
Loi 1: Phn ng oxi ha kh n gin1. H2SO4 + H2S ( S + H2O
2. S + HNO3 ( H2SO4 + NO
3. I2 + HNO3 ( HIO3 + NO + H2O
4. NH3 + O2 ( NO + H2O
6. H2SO4 + HI ( I2 + H2S + H2O
7. P + KClO3 ( P2O5 + KCl
8. NH3 + CuO ( Cu + H2O + N2
5. C + HNO3 ( NO2 + CO2 + H2O
Loi 2: Phn ng t oxi ho kh.1. KOH + Cl2 ( KClO3 + KCl + H2O
2. KClO3 ( KCl + KClO43. NO2 + H2O ( HNO3 + NO
4. NO2 + NaOH ( NaNO3 + NaNO2 + H2O
5. HNO2 ( HNO3 + NO + H2O
6. S + NaOH ( Na2SO4 + Na2S + H2O7. Br2 + NaOH ( NaBr + NaBrO3 + H2O8. K2MnO4 + H2O ( MnO2 + KMnO4 + KOHLoi 3: Phn ng oxi ho kh ni phn t.1. NaNO3 ( NaNO2 + O2
2. KClO3 ( KCl + O23. NH4NO2 ( N2 + H2OLoi 4: Phn ng oxi ha kh c mi trng tham gia1. Cu + H2SO4 ( CuSO4 + SO2 + H2O
2. Zn + HNO3 ( Zn(NO3)2 + NH4NO3 + H2O
3. MnO2 + HCl ( MnCl2 + Cl2 + H2O
4. NO + K2Cr2O7 + H2SO4 ( HNO3 + K2SO4 + Cr2(SO4)3 + H2O
5. KMnO4 + FeSO4 + H2SO4 ( K2SO4 + MnSO4 + Fe2(SO4)3 + H2O
Loi 5. Phn ng oxi ha kh phc tp.
1. FeS2 + O2 ( Fe2O3 + SO2
2. FeS2 + HNO3 ( Fe(NO3)3 + NO + H2SO4 + H2O
3. As2S3 + HNO3 + H2O ( H3AsO4 + H2SO4 + NO
4. FeS + HNO3 + H2O ( Fe(NO3)3 + Fe2(SO4)3 + NH4NO35. K2Cr2O7 + FeCl2 + HCl ( CrCl3 + Cl2 + FeCl3 + KCl + H2O
Loi 6. Phn ng oxi ha kh cha n s
1. FexOy + H2SO4 ( Fe2(SO4)3 + SO2 + H2O
2. FexOy +HNO3 ( Fe(NO3)3 + NO2 + H2O
3. FexOy + CO ( Fe + CO24. Fe + HNO3 ( Fe(NO3)3 + NaOb + H2O
2. Dng 2: Hon thnh p oxi ha khBi 3: Hon thnh cc ptp sau:
a. FeSO4 + K2Cr2O7 + H2SO4 Cr2(SO4)3 +
b. Zn + HNO3 N2 +
c. Fe3O4 + HNO3 NO +
3.Dng 3: D on vai tr ca cc cht, ion trong phn ng oxi ha khBi 4: Cc cht v ion sau y c tnh cht g? (oxi ha hay kh hay va xi ha va kh)
HClO, H2SO4, HNO3, Cl2, KClO3, HCl, H2O2, H2S, S, Fe2+, Cu2+, Cl-4. Dng 4: Bi tp s dng nh lut bo ton e:
Bi 5: : Cho m gam Al p ht vi dd HNO3 thu c 4,48 lt (ktc) kh NO. Tnh m?
Bi 6: : Cho m gam Cu p ht vi dd HNO3 thu c 2,24lt (ktc) kh NO2. Tnh m?
Bi 7: Cho m gam Al p ht vi dd HNO3 thu c 8,96l (ktc) hn hp kh NO v N2O c t khi hi so vi H2 bng 18,5. Tnh m?Bi 8: Cho m gam Cu p ht vi dd HNO3 thu c 8,96 lt (ktc) hn hp kh NO v NO2 c khi lng l 15,2g. Tnh m.
Bi 9: Cho 2,16g kim loi M ha tr 3 tc dng ht vi dd HNO3 long thu c 0,027 mol hn hp kh N2 v N2O. Hn hp kh ny c t khi hi so vi H2 l 18,45. Tm kim loi M.
Bi 10: Cho m(g) hn hp 2 kim loi Fe v Cu c chia lm 2 phn bng nhau:
Phn 1: ha tan ht vo dd HCl d thu c 5,6 lt H2 (ktc).
Phn 2: ha tan ht vo dd HNO3 d thu c 10,08 lt NO (ktc).
Tm m.
Bi 11 Chia m gam hn hp bt Al, Fe thnh 2 phn bng nhau:
Phn 1: tan hon ton trong dd HCl ta thu c 7,28 lt H2 (ktc).
Phn 2: tc dng vi dd HNO3 long nng n khi tan ht thu c 5,6 lt kh (ktc).
Tnh thnh phn % theo khi lng cc kim loi trong hn hp.
Bi 12: C mt hn hp A gm Fe v kim loi M ha tr khng i, khi lng hn hp l 15,06g. Chia hn hp lm 2 phn bng nhau:
Phn 1: ha tan ht vo dd HCl d thu c 3,696 lt H2 (ktc).
Phn 2: ha tan ht vo dd HNO3 d thu c 3,36 lt NO (ktc).
Tm kim loi M.Bi 13: Khi cho 38g hn hp X gm Fe v Fe2O3 tan hon ton trong dd HCl ta thu c 5,6 lt H2 (ktc). Nu cho 38g X tan hon ton trong dd HNO3 c, nng thu c 16,8 lt kh mu nu.
Tnh % khi lng mi cht trong hn hp X.
Bi 14: m gam phi bo st ngoi khng kh, sau 1 thi gian bin thnh hn hp B c khi lng 12g gm Fe v cc oxit FeO, Fe3O4, Fe2O3. Cho B tc dng hon ton vi dd HNO3 thy sinh ra 2,24l NO duy nht ktc. Tnh m?Bi 15: Nung m gam bt st trong oxi, thu c 3 gam hn hp cht rn X. Ha tan ht hn hp X bng dung dch HNO3 d, thu c 0,56 lt kh NO (sn phm kh duy nht). Tnh m.