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Assertion : In the dissociation of PCl(5...

Assertion : In the dissociation of `PCl_(5)` at constant pressure and temperature addition of helium at equilibrium increases the dissociation of `PCl_(5)`.
Reason : Helium reacts with `Cl_(2)` and hence shifts the equilibrium in forward direction.

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:
C
Helium is an inert gas and hence dose not react with `Cl_(2)`. However to keep the pressure constant on addition of helium, volume of the system will increase which will favour forward reaction.
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