Four half reactions I to IV are shown below: I. 2Cl^-\to ...

CBSE Class 12 Chemistry 2023 All Sets Solved Paper

Question : 4 of 18

Marks: +1, -0

Four half reactions I to IV are shown below:
I.

2Cl^-→ Cl_2+2e^-

II.

4OH^-→ O_2+2H_2O+2e^-

III.

Na^++e^-→ Na

IV.

2H^++2e^-→ H_2

Which two of these reactions are most likely to occur when concentrated brine is electrolysed?

Solution:

On electrolysis of brine solution.
At anode

2Cl^-→ Cl_2+2e^-

(oxidation)
At cathode

Na^++e^-→ Na

Go to Question:

Prev Question

Next Question