Đáp án:
Giải thích các bước giải:
a) Cu(OH)2, Fe(OH)3
b) Cu(OH)2, KOH, Ba(OH)2, Fe(OH)3
PTHH:
Cu(OH)2 + 2HCl -> CuCl2 + 2H2O
KOH + HCl -> KCl + H2O
Ba(OH)2 + 2HCl -> BaCl2 + 2H2O
Fe(OH)3 + 3HCl -> FeCl3 + 3H2O
c) KOH, Ba(OH)2
PTHH:
2KOH + SO2 -> K2SO3 + H2O
KOH + SO2 -> KHSO3
Ba(OH)2 + SO2 -> BaSO3 + H2O
d) Cu(OH)2, Fe(OH)3
PTHH:
Cu(OH)2 -to-> CuO + H2O
2Fe(OH)3 -to-> Fe2O3 + 3H2O