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Question

When current is passed through molten sodium chloride.
  1. Sodium is deposited at the positive electrode and chlorine gas is formed at the negative electrode.
  2. Sodium is deposited at the positive electrode and chlorine is deposited at the negative electrode.
  3. Sodium is evaporated and chlorine ions are formed at the negative electrode.
  4. Sodium is deposited at the negative electrode and the chlorine gas is formed at the positive electrode.

A
Sodium is evaporated and chlorine ions are formed at the negative electrode.
B
Sodium is deposited at the positive electrode and chlorine is deposited at the negative electrode.
C
Sodium is deposited at the negative electrode and the chlorine gas is formed at the positive electrode.
D
Sodium is deposited at the positive electrode and chlorine gas is formed at the negative electrode.
Solution
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When current is passed through molten sodium chloride, Na+ ions get reduced at the negative electrode (cathode) and thus sodium is deposited at cathode whereas Cl ions get oxidized at the positive electrode (anode) and hence chlorine gas is formed at anode.

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