K + H2O = KOH + H2
SO4 + H2O = H2SO4
Ca + H2O = Ca(OH)2
P2O3 + H2O = H3PO4
Fe(OH)3 = FeO(OH) + H2O
Fe(OH)2 = Fe(OH)2
Mg + H2SO4 = MgSO4 + H2
Mg + HCl = MgCl2 + H2
K + H2O = KOH + H2
SO4 + H2O = H2SO4
Ca + H2O = Ca(OH)2
P2O3 + H2O = H3PO4
Fe(OH)3 = FeO(OH) + H2O
Fe(OH)2 = Fe(OH)2
Mg + H2SO4 = MgSO4 + H2
Mg + HCl = MgCl2 + H2