Записать уравнение реакции Cu CuS CuSo4 Cu(OH)2 Cuo CuCl2
Сu + S = CuS CuS+H2SO4= CuSO4 +H2S CuSO4+2NaOH = Cu(OH)2 +Na2SO4 Cu(OH)2-----> CuO +H2O CuO +2HCl = CuCl2 +H2O