Question

SO2 has acidic character. explain.

Answer 1

Question #57818, Chemistry / Inorganic Chemistry

SO2 has acidic character. Explain.

$\mathrm{SO}_2$ reacts with oxides, carbonates and hydroxides of alkaline metals and forms sulfites.

$$\mathrm{NaOH} + \mathrm{SO}_2 = \mathrm{NaHSO}_3$$ $$2\mathrm{KOH} + \mathrm{SO}_2 = \mathrm{K}_2\mathrm{SO}_3 + \mathrm{H}_2\mathrm{O}$$ $$\mathrm{NaHCO}_3 + \mathrm{SO}_2 = \mathrm{NaHSO}_3 + \mathrm{CO}_2\uparrow$$