Cu(OH)2 + 2HCl -> CuCl2 + 2H2O
Cu2+ + 2OH- + 2H+ + 2Cl- -> Cu2+ + 2Cl- + 2H2O
2OH- + 2H+ -> 2H2O
OH- + H+ -> H2O
Mg(OH)2 + H2SO4 -> MgSO4 + 2H2O
Mg2+ + 2OH- + 2H+ + SO42- -> Mg2+ + SO42- + 2H2O
OH- + H+ -> H2O
NaOH + HNO3 -> NaNO3 + H2O
Na+ + OH- + H+ + NO3- -> Na+ + NO3- + H2O
OH- + H+ -> H2O
3KOH + H3PO4 -> K3PO4 + 3H2O
3K+ + 3OH- + 3H+ + PO43- -> 3K+ + PO42- + 3H2O
OH- + H+ -> H2O
2Al(OH)3 + 3H2CO3 -> Al2(CO3)3 + 6H2O
2Al3+ + 6OH- + 6H+ + 3CO32- -> 2Al3+ + 3CO32- + 6H2O
OH- + H+ -> H2O
MgO + H2O -> Mg(OH)2
K2O + H2O -> 2KOH
SO2 + H2O -> H2SO3
N2O5 + H2O -> 2HNO3
Zn + H2SO4 -> ZnSO4 + H2^
Mg + 2HCl -> MgCl2 + H2^
