Question

Find out products of hydrolysis of $NaCl$ solution at cathode and anode.

• A. $H _{2}, Cl _{2}$
• B. $Cl _{2}, H _{2}$
• C. $Na , Cl _{2}$
• D. $Na , O _{2}$

Answer 1

Answer: (A)

At cathode, reduction reaction with higher value of $E^{0}$ is preferred while at anode oxidation reaction with lower value of $E^{0}$ is preferred.
Cathode: $2 H _{2} O 2 e H _{2}+2 OH$
Anode : $2 Cl \quad Cl _{2}+2 e$