H2SO4+Ba(OH)2=BaSO4↓+2H2O 2H⁺+SO4⁻²+Ba⁺²+2OH⁻=BaSO4↓+2H2O H2SO4+Mg=MgSO4+H2↑ 2H⁺+SO4⁻²+Mg⁰=Mg⁺²+SO4⁻²+H2↑ 2H⁺+Mg⁰=Mg⁺²+H2 FeO+H2SO4=FeSO4+H2O FeO↓+2H⁺+SO4⁻²=Fe⁺²+SO4⁻²+H2O FeO↓+2H⁺=Fe⁺²+H2O Ba(NO3)2+H2SO4=BaSO4↓+2HNO3 Ba⁺²+2NO3⁻+2H⁺+SO4⁻²=BaSO4↓+2H⁺+2NO3⁻ Ba⁺²+SO4⁻²=BaSO4↓
