Question

How to write the chemical reactions in the form of oxidation and reduction at cathode and anode during electrolysis?
Please Answer​

Answer 1

Explanation:

Redox is a reaction, where one reactant oxidises and other reactant reduces.

In electrolysis like electrolysis of water,

At anode: 2H

2

O→O

2

+4H

+

+4e

−

oxidation

At cathode: 4H

2

O+4e

−

→2H

2

+4OH

−

reduction

(i) Cathode (Reducing electrode) : At cathode, the cations gain electrons to form neutral atoms. As electrons are gained, the ion is said to be reduced.

(ii) Anode (Oxidizing electrode) : At anode, the anions lose electrons to form neutral atoms. As electrons are lost, the ion is said to be oxidized.