CuO + H2SO4 -> CuSO4 + H2O
CuO + 2HCl -> CuCl2 + H2O
CuO + HNO3 -> Cu(NO3)2 + H2O
CuO + NaOH -> Na2CuO2 + H2O
CuO + H2SO4 -> CuSO4 + H2O
CuO + 2HCl -> CuCl2 + H2O
CuO + HNO3 -> Cu(NO3)2 + H2O
CuO + NaOH -> Na2CuO2 + H2O