Sodium metal is extracted by

Electrolysis of aqueous sloution of sodium chloride

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Electrolysis of fused sodium chloride

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Heating sodium oxide with carbon

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Heating sodium oxide with hydrogen

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Solution

The correct option is B Electrolysis of fused sodium chloride
Sodium is extracted by electrolytic reduction of molten or fused sodium chloride. On passing electricity through molten sodium chloride, decomposition occurs and sodium metal is formed at cathode and chlorine gas is formed at anode.

$N a C l f u s e d E l e c t r o l y s i s - ------ \to 2 N a + C l_{2}$

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Similar questions

Q. When

F e C r_{2} O_{4}

is fused with Sodium Carbonate in the presence of air, we get

(a) For the reduction of a metal oxide, suggest a reducing agent other than carbon.
(b) Explain why an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.

During the electrolysis of aqueous sodium chloride, sodium ions having a greater tendency than water to get oxidized, gets oxidized and forms sodium at the cathode.

Q. Sodium metal is prepared commercially by electrolysis of fused

N a C l

by:

Q. (i) An aqueous solution of sodium chloride is not used for electrolytic reduction of sodium metal. Why?
(ii) For the reduction of a metal oxide, suggest a reducing agent other than carbon.

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