2Cu + O2 =t= 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaOH = Cu(OH)2↓ + 2NaCl
Cu(OH)2 + 2HCl = CuCl2 + 2H2O
Zn + CuCl2 = ZnCl2 + Cu↓
2Cu + O2 =t= 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaOH = Cu(OH)2↓ + 2NaCl
Cu(OH)2 + 2HCl = CuCl2 + 2H2O
Zn + CuCl2 = ZnCl2 + Cu↓