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(i) "Sodium is a highly reactive metal a...

(i) "Sodium is a highly reactive metal and it cannot be obtained from its oxide by heating with carbon". Give reason.
(ii) How can sodium be obtained from sodium chloride ?

Text Solution

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(i) Metallic compounds like sodium cannot be reduced by carbon or any other reducing agent due to their high affinity with oxygen.
(ii) Sodium is obtained from sodium chloride by electrolytic reduction. Sodium chloride in molten form is electrolysed
Sodium is deposited at cathode and chlorine is liberated at anode
At cathode : `Na^(+) + e^(-) rarr Na`
At anode : `2Cl^(-) rarr Cl_(2) + 2e`
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