SO2 + H2O ====H2SO3
CO2 + H2O ====H2CO3
Zn +2HCl ===ZnCl2 + H2
Mg + 2HCl ===MgCl2 +H2
2HCl +MgO ===MgCl2 + H2O
H2SO4 + CaO===CaSO4 +H2O
2NaOH +CO2 ===Na2CO3 +H2O
2NaOH + SO3 ==Na2SO4 +H2O
SO2 + H2O ====H2SO3
CO2 + H2O ====H2CO3
Zn +2HCl ===ZnCl2 + H2
Mg + 2HCl ===MgCl2 +H2
2HCl +MgO ===MgCl2 + H2O
H2SO4 + CaO===CaSO4 +H2O
2NaOH +CO2 ===Na2CO3 +H2O
2NaOH + SO3 ==Na2SO4 +H2O