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 aqueous $KI$ solution,the following reactions occur:At the cathode: $2H_2O(l) + 2e^- \rightarrow H_2(g) + 2OH^-(aq)$. T

Vedclass · Accepted Answer

$a, c$

Vedclass · Answer

(C) During the electrolysis of aqueous $KI$ solution,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 in the solution,the concentration of $OH^-$ increases,which means $pOH$ decreases and $pH$ increases.Potassium $(K)$ is not deposited because the reduction potential of $H_2O$ is higher than that of $K^+$.Therefore,statements $(a)$ and $(c)$ are correct.

On electrolysis of aqueous solution of $KI$ in presence of platinum electrodes:
$(a)$ Hydrogen gas is released at cathode
$(b)$ Oxygen gas is released at anode
$(c)$ $pOH$ of solution decreases
$(d)$ There is deposition of potassium at cathode
Choose the correct option from following

Similar Questions

The products obtained at the cathode and anode respectively during the electrolysis of aqueous $K_2SO_4$ solution using platinum electrodes are

Which of the following is released at the cathode during the electrolysis of aqueous sodium chloride?

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

Electrolysis of which of the following yields benzene?

Which is responsible for electrical conduction of molten sodium chloride?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

On electrolysis of aqueous solution of $KI$ in presence of platinum electrodes:$(a)$ Hydrogen gas is released at cathode$(b)$ Oxygen gas is released at anode$(c)$ $pOH$ of solution decreases$(d)$ There is deposition of potassium at cathodeChoose the correct option from following