Why Does Hypochlorous Acid Have Bleaching Properties?

  Is it the hypochlorite ion or hypochlorous acid that has the bleaching property? Hypochlorite ions can only bleach when they are converted into hypochlorous acid. For example, solid bleaching powder cannot bleach. It can only be converted into hypochlorous acid when it is dissolved in water. The standard for judging whether it can be bleached is to see whether hypochlorous acid exists.

  And sodium hypochlorite can make fuchsin fade. Sodium hypochlorite is a strong base and weak acid salt. When it is dissolved in water, it will undergo a hydrolysis reaction, NaClO + H2O=(reversible)=NaOH + HClO; hypochlorous acid is generated, so it can bleach.