Cuo>cu(oh)2>h2o>fe(oh)2-feo-fe
СuO + H₂O = Cu(OH)₂ Cu(OH)₂ + 2HCl = CuCl₂ + 2H₂O FeO + H₂O = Fe(OH)₂ Fe(OH)₂ = FeO + H₂O (при t°) FeO + CO = Fe + CO₂