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Assertion: At equilibrium, vapour phase ...

Assertion: At equilibrium, vapour phase will not be always rich in component which is more volatile.
Reason: The composition of vapour phase in equilibrium with the solution is determined by the partial pressures of the components.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true, but reason is not the correct explanation of assertion.

C

If assertion is true, but reason is false.

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
D
At equilibrium, the vapour phase will always be rich in volatile components. The higher liquid.s vapour pressure is at a given temperature the higher its volatility and the lower the liquid.s typical boiling point. The partial pressure of components determines the composition of the vapour phase in equilibrium with the solution. Thus, both assertion and reason are false.
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