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The commercial method of preparation of ...

The commercial method of preparation of potassium by reduction of molten `KCl` with metallic sodium at `850^(@)C` is based on the fact that

A

potassium is solid and sodium and solution distils off at `850^(@)C`

B

potassium being more volatile and distile and distils off thus shifting the reaction forward

C

sodium is more reactive than potassium at `850^(@)C`

D

`sodum has less affinity to chloride ions in the presence of potassium ion

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The correct Answer is:
B
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