What would happen if you put water to chlorine?

If you mix water with chlorine, a chemical reaction will occur. The chlorine will dissolve in the water and form hydrochloric acid (HCl) and hypochlorous acid (HOCl). Hydrochloric acid is a strong acid, while hypochlorous acid is a weak acid. The hypochlorous acid is the active ingredient in bleach, and it is responsible for the disinfectant properties of chlorine.