SO3 + H2O = H2SO4
N2O5 + Ca(OH)2 = Ca(NO3)2 + H2O
MgO + SO3 = MgSO4
Na2O + H2O = 2 NaOH
ZnO + H2O = Zn(OH)2
ZnO + N2O5 = Zn(NO3)2
Ba + 2 H2O = Ba(OH)2 + H2
Cu(OH)2 = CuO + H2O
H2SO4 + MgO = H2O + MgSO4
3 H2SO4 + Al2O3 = Al2(SO4)3 + 3 H2O
SO3 + 2 KOH = H2O + K2SO4