Question

When current is passed through molten sodium chloride.

• A. Sodium is deposited at the positive electrode and chlorine gas is formed at the negative electrode.
• B. Sodium is evaporated and chlorine ions are formed at the negative electrode.
• C. Sodium is deposited at the positive electrode and chlorine is deposited at the negative electrode.
• D. Sodium is deposited at the negative electrode and the chlorine gas is formed at the positive electrode.

Answer 1

The correct option is D Sodium is deposited at the negative electrode and the chlorine gas is formed at the positive electrode.

When current is passed through molten sodium chloride, $N{a}^{+}$ ions get reduced at the negative electrode (cathode) and thus sodium is deposited at cathode whereas $C{l}^{-}$ ions get oxidized at the positive electrode (anode) and hence chlorine gas is formed at anode.