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For the depression in freezing point exp...

For the depression in freezing point experiment, the correct statement(s) is/are:

A

The vapour pressure of the solution is less than that of pure solvent.

B

The vapour pressure of the solution is more than that of pure solvent.

C

Only solute molecules solidify at freezing point.

D

Only solvent molecules solidify at freezing point.

Text Solution

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The correct Answer is:
A, D
In the depression in freezing point experiment, it is found that the vapour pressure of a solution is less than that of pure solvent. Only solvent molecules solidify at freezing point. The temperature at which the vapour pressure of the liquid is equal to the vapour pressure of the solid is graphically the temperature at which the vapour pressure curve of the solid. When a non-volatile solute is dissolved in a liquid, its freezing point is lowered.
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