Question
When blue litmus is dipped into a solution of hypochlorous acid, it first turns red and is then decolorized. Why?
Solution
HOCl acts both as an acid (HOCl→H+ + OCl–) as well as a bleaching agent (HOCl→ HCI + O).
Formation of HCl change the colour of litmus paper.
Formation of HCl change the colour of litmus paper.
