- 3.17 MB
- 2021-04-16 发布
·1·
2019
3 42
1 2 3 4 5 6 7 8 9 10 11 12 13 14
B C C A C D B A D B A D C D
58
1
15. 6 2
1 Sn2+ + 4Cl-= SnCl42- HCl SnCl42- Sn(OH)Cl SnCl2
SnCl2 +H2OSn(OH)Cl +HCl SnCl2 +2H2OSn(OH)2+2HCl
“ ”
2 MnO2 + 4HCl MnCl2 + Cl2 + 2H2O “ ”
MnO2 HCl “ ”
“ ”
3 Au + HNO3 + 4HCl = HAuCl4 + NO + 2H2O NO2
Au “ ”
“ ”
16 11 2
1 b 1
2
3
4 0.375NA 2.26×1023
5 55.3% 55.2%
17. 13 2
1 NaOH
·2·
2 d
3 Zn 1
4 CuS H2O2 H2SO4===CuSO4 S 2H2O
5 3
6
18. 14 2
. 1 COS(g)+H2(g) H2S(g) + CO(g) H2= +7 kJ·mol 1
2 ABC 1 3 A 1 4 50%
.
5 2Cu2S + 3O2 2Cu2O + 2SO2
2Cu2O + Cu2S 6Cu + 2SO2
6 SO42- Cl-
NaOH
19. 14 2
1
2 1 1
3 AB
4
5
6 4