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  4. Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% CaCl2 because

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Q. Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% $CaCl_2$ because

AIPMTAIPMT 1995The s-Block Elements

Solution:

The melting point of sodium chloride is high, so to reduce the melting point of NaCl some $CaCl_2$ is added to the electrolytic mixture.