Zn0+ H2O \(\frac{t^0}{ }\)> Zn(OH)2
Na2O +H2O -> 2NaOH
P2O5+ 3H2O -> 2H3PO4
SO2 + H2O -> H2SO3
Al2O3 + 3H2O \(\frac{t^0}{ }\) > 2Al(OH)3
Fe3O4 + 4H2O -> Fe(OH)2 + 2Fe(OH)3
H2SO4 + 2H2O → 2H3O + SO4
BaO +H2O -> Ba(OH)2
CaO +H2O -> Ca(OH)2
CO2+ H2O -> H2SO3
CaCO3+H2O -> Ca(OH)2+CO2
2NaCl +2H2O -> Cl2 + H2 + 2NaOH
K2O +H2O -> 2KOH