Question

Electrolysis of a dilute solution of aqueous sodium chloride results in the cathode product:

• A. Sodium
• B. Hydrogen
• C. Chlorine
• D. Oxygen
• E. Peroxide

Answer 1

The correct option is B Hydrogen

In electrolysis of aqueous sodium chloride, both $H^{+}$ and $N{a}^{+}$ will compete with each other for reduction and as the reduction potential of $H^{+}$ is more compared to $N{a}^{+}$, so $H^{+}$ will get reduced first at cathode and hydrogen gas will be liberated at cathode.