MgO + Ca = CaO + Mg CaO + H2O = Ca(OH)2 Ca(OH)2 + CuCl2 → Cu(OH)2↓ + CaCl2
Zn + 2HCl = ZnCl2 + H2↑
2NaOH(разб.) + ZnCl2 = Zn(OH)2↓ + 2NaCl
Zn(OH)2 = ZnO + H2O
MgO + Ca = CaO + Mg
CaO + H2O = Ca(OH)2
Ca(OH)2 + CuCl2 → Cu(OH)2↓ + CaCl2
Zn + 2HCl = ZnCl2 + H2↑
2NaOH(разб.) + ZnCl2 = Zn(OH)2↓ + 2NaCl
Zn(OH)2 = ZnO + H2O