2HCl + CaO = CaCl2 + H2O
CuO + 2HCl = CuCl2 + H2O
Ca(OH)2 +2 HCl = CaCl2 + 2H2O
NaOH + HCl = NaCl + H2O
CaO + 2HNO3 = Ca(NO3)2 + H2O
CuO +2 HNO3 = Cu(NO3)2 + H2O
Ca(OH)2 +2 HNO3 = Ca(NO3)2 +2 H2O
NaOH + HNO3 = NaNO3 + H2O
CaO + SO2 = CaSO3
Ca(OH)2 + SO2 = CaSO3 + H2O
2NaOH + SO2 = Na2SO3 + H2O
CaSO4 + 2NaOH = Ca(OH)2 + Na2SO4