CuO + 2HCl -> CuCl2 + H2OCuCl2 + 2NaOH -> Cu(OH)2 + 2NaClCu(OH)2 -> CuO + H2OCuO + H2SO4 -> CuSO4 + H2O
CuO + 2HCl -> CuCl2 + H2O
CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl
Cu(OH)2 -> CuO + H2O
CuO + H2SO4 -> CuSO4 + H2O