On electrolysis of aqueous solution of KI in | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) During the electrolysis of an aqueous solution of $KI$,the following reactions occur:At the cathode: $2H_2O(l) + 2e^- \rightarrow H_2(g) + 2OH^-(a

Vedclass · Accepted Answer

$a, c$

Vedclass · Answer

(C) During the electrolysis of an aqueous solution of $KI$,the following reactions occur:At the cathode: $2H_2O(l) + 2e^- \rightarrow H_2(g) + 2OH^-(aq)$. Thus,$H_2$ gas is released at the cathode.At the anode: $2I^-(aq) \rightarrow I_2(s) + 2e^-$. Thus,$I_2$ is formed at the anode,not $O_2$.Since $OH^-$ ions are produced at the cathode,the concentration of $OH^-$ increases,which means the $pH$ of the solution increases and the $pOH$ decreases.Therefore,statements $(a)$ and $(c)$ are correct.

Similar Questions

On passing the current in a water voltameter,the hydrogen is:

What will be the number of $Al^{+3}$ ions obtained upon the electrolysis of $AlCl_3$?

What happens to the $pH$ of the solution during the electrolysis of a dilute aqueous solution of $CuSO_4$ using inert electrodes?

When acidulated water ($dil. H_{2}SO_{4}$ solution) is electrolysed,will the $pH$ of the solution be affected? Justify your answer.

Which of the following is $NOT$ an anode reaction?

Vedclass Test Series

Exam Paper Generator

Online Exam Module