SO₂ can react with OH-, forming HSO3-. In this reaction, the

Last updated: 7/9/2022

SO₂ can react with OH-, forming HSO3-. In this reaction, the SO2 acts as a Brønsted acid, accepting a proton from the OH-ion. the SO2 acts as a Lewis acid, accepting a proton from the OH-ion. the OH-ion acts as a Brønsted base, donating a proton to the SO2 molecule. the OH-ion acts as a Lewis acid, accepting an electron pair from the SO2 molecule to form a coordinate covalent bond. the OH-ion acts as a Lewis base, donating an electron pair to the SO2 molecule to form a coordinate covalent bond.