(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.
(a) Aluminium can be used as a reducing agent other than carbon.
(b) Aqueous solution of sodium chloride is not used to obtain sodium metal because on electrolyzing an aqueous solution of sodium chloride, sodium metal is produced at the cathode, which reacts with water present in the aqueous solution to form sodium hydroxide. Hence, electrolysis of an aqueous solution of sodium chloride will produce sodium hydroxide and not sodium metal.
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