siarczan(VI)sodu
1. 2NaOH+H2SO4--->Na2SO4+2H2O
2. 2Na+H2SO4--->Na2SO4+H2
3. Na2O+H2SO4--->Na2SO4+H2O
chlorek litu
1. LiOH+HCl--->LiCl+H2O
2. 2Li+2HCl--->2LiCl+H2
3. Li2O+2HCl--->2LiCl+H2O
węglan magnezu
1. Mg(OH)2+H2CO3--->MgCO3+2H2O
2. Mg+H2CO3--->MgCO3+H2
3. MgO+H2CO3--->MgCO3+H2O