Statement : The cathode of electrolytic cell during electrolysis of `NaCl_((aq.))` on additon
Channel: Doubtnut
Date: 2020-08-02

Statement : The cathode of electrolytic cell during electrolysis of `NaCl_((aq.))` on additon of little litmus shows a blue colour.   Explanation : At cathode : `2H^(+) + 2e rarr H_(2)`. The reaction at cathode give rise to an increase in `pH` ranging in alkaline medium and litmus shows blue colour.