CuO + H2SO4 = CuSO4 + H2O
AgNO3 + KCl = AgCl + KNO3
CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4
MgO + 2HCl = MgCl2 + H2O
CuO + H2SO4 = CuSO4 + H2O
AgNO3 + KCl = AgCl + KNO3
CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4
MgO + 2HCl = MgCl2 + H2O