Sodium metal is made by the electrolysis of a molten mixture of about `40% NaCI and 67% CaCI_(2)` in a

Options

A. `Ca^(2+)` can reduce `NaCl` to `Na`
B. `Ca^(2+)` can displace `Na` from `NaCl`
C. `CaCl_2` helps in conduction of electricity
D. this mixture has a lower melting point than `NaCl`

Answer

D

Explanation

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