BaO + H2O = Na2O + Al2O3 = CuO + H2SO4 = CaO + SO3 = ZnO + BaO = Al2O3 + P2O5 = Ba(OH)2 + P2O5 = K2O + Zn(OH)2 =
BaO + 2H2O = Ba(OH)2 Na2O + Al2O3 = 2NaAlO2 CuO + H2SO4 = CuSO4 + H2O CaO + SO3 = CaSO4 ZnO + BaO = BaZnO2 Ba(OH)2 + P2O5 = Ba(PO3)2 + H2O