Объяснение:

Zn + Cl2 = ZnCl2

Zn + 2 HCl = ZnCl2 + H2↑

ZnO + 2 HCl =ZnCl2 + H2O

Zn(OH)2 + 2 HCl = ZnCl2 + 2 H2O

ZnSO4 + BaCl2 = ZnCl2 + BaSO4↓

Ba + 2H2O = Ba(OH)2 + H2↑

BaO + H2O = Ba(OH)2

BaS + 2H2O = Ba(OH)2 + H2S↑