Question

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Sodium chloride (molten) electrolyse than
chlorine gas is evolved at anode and
sodium metal
deposited at cathod.

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Answer 1

Answer:

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Answer 2

Answer:

Rather than producing sodium, hydrogen is produced. Electrolysis of aqueous sodium chlorideElectrolysis of aqueous NaCl results in hydrogen and chloride gas. At the anode (A), chloride (Cl-) is oxidized to chlorine. ... At the cathode (C), water is reduced to hydroxide and hydrogen gas.

Explanation:

NaCl → Na +(l) + Cl–(l)

At cathode: reduction of 2Na+(l) + e– → Na(l)

At anode: oxidation of 2Cl–(l) → Cl2(g) + 2e–

Net Reaction is written as: 2Na +(l) + 2Cl–(l) → 2Na(l) + Cl2(g)

Down’s Process: Sodium chloride melts at a very high temperature of 801°C. Addition of anhydride calcium chloride in the ratio of CaCl2: NaCl = 3:2 reduces the melting point to 580°C. Electrolysis is done with an iron cathode and graphite anode and iron gauze preventing the mixing of products chlorine and sodium. The products of molten sodium chloride are sodium metal and chlorine gas.