Question

Reaction showing acidic behavior of Sulphur dioxide

Answer 1

Sulfur dioxide: Sulfur dioxide is fairly soluble in water, reacting to give a solution of sulfurous acid (also known as sulfuric(IV) acid), H2SO3, as shown in the reaction below. This species only exists in solution, and any attempt to isolate it gives off sulfur dioxide.

Reaction: SO2+H2O→H2SO3
........