Cl2 → HCl → CuCl2 → Cu → CuO → Cu(OH)2 решение
Cl2 → HCl → CuCl2 → Cu → CuO → Cu(OH)2
Cl2 + H2↑ = 2HCl
Cu(OH)2 + 2HCl = CuCl2 + 2H2O
или CuO + 2HCl = CuCl2 + H2O
CuCl2 → Cu + Cl2
2Cu + O2 = 2CuO
CuO + H2O = Cu(OH)2