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The sodium is made by the electrolysis of a molten mixture of about 40 \% \mathrm{NaCl} and60 \% \mathrm{CaCl}_{2} \cdot \mathrm{CaCl}_{2} is added in molten \mathrm{NaCl} because

Option: 1

\mathrm{Ca}^{+2} can displace \mathrm{Na} from \mathrm{NaCl}


Option: 2

This mixture has a lower melting point than \mathrm{NaCl}


Option: 3

\mathrm{CaCl}_{2} helps in conduction of electricity


Option: 4

\mathrm{Ca}^{+2} can reduce \mathrm{NaCl} to \mathrm{Na}


Answers (1)

best_answer

Melting point of chloride of sodium is high so in order to lower its melting point, calcium chloride is added to it.

Posted by

Devendra Khairwa

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