The reactions of ion exchange include the interaction of 1-oxygen and sulfur 2-sulfur oxide (5) and water 3-solution

The reactions of ion exchange include the interaction of 1-oxygen and sulfur 2-sulfur oxide (5) and water 3-solution of sodium sulfite and hydrochloric acid 4-hydrochloric acid and zinc.

The ion exchange reaction usually occurs between electrolytes, in a solution state, and the oxidation states of the participants do not change. In this matter, the reaction of oxygen and sulfur, as well as sulfur oxide and water, is a compound; the reaction of zinc and hydrochloric acid is substitution. But the reaction of sodium sulfite with sulfuric acid will be an ion exchange reaction. If at the end the sulfurous acid decomposes with the formation of water and sulfur oxide, then the reaction will go to the end.