12/ Fe(0H)3 + HCl-> FeCl3 + H20 13/ CaCl2 + AgN03 -> Ca(N03)2 + AgCl 14/ P + 02 -> P205 15/ N205 + H20 -> HN03 16/ Zn + HCl -> ZnCl2 + H2 17/ Al203 + H2S04 -> Al2(S04)3 + H20 18/ C02 + Ca(0H)2 -> CaC03 + H20 19/ S02 + Ba(0H)2 -> BaS03 + H20

12/ Fe(OH)3 + 3HCl-> FeCl3 +3 H2O

13/ CaCl2 + 2AgNO3 -> Ca(NO3)2 + 2AgCl

14/ 4P + 5O2 -> 2P2O5

15/ N2O5 + H2O -> 2HNO3

16/ Zn + 2HCl -> ZnCl2 + H2

17/ Al2O3 + 3H2SO4 -> Al2(SO4)3 + 3H2O

18/ CO2 + Ca(OH)2 -> CaCO3 + H2O

19/ SO2 + Ba(OH)2 -> BaSO3 + H2O

Đáp án+Giải thích các bước giải:

12/ Fe(OH)3 + 3HCl → FeCl3 + 3H2O
13/ CaCl2 + 2AgNO3 → Ca(NO3)2 + 2AgCl
14/ 4P + 5O2 → 2P2O5
15/ N2O5 + H2O → 2HNO3
16/ Zn + 2HCl → ZnCl2 + H2
17/ Al2O3 + 3H2SO4 → Al2(SO4)3 + 3H2O
18/ CO2 + Ca(OH)2 → CaCO3 + H2O
19/ SO2 + Ba(OH)2 → BaSO3 + H2O