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Question
Assertion (A): In the dissociation of \[\ce{PCl5}\] at constant pressure and temperature addition of helium at equilibrium increases the dissociation of \[\ce{PCl5}\].
Reason (R): Helium removes \[\ce{Cl2}\] from the field of action.
Options
Both A and R are true and R is correct explanation of A.
Both A and R are true but R is not correct explanation of A.
A is true but R is false.
Both A and R are false.
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Solution
Both A and R are false.
Explanation:
If the volume is kept constant and an inert gas such as argon is added which does not take part in the reaction, the equilibrium remains undisturbed.
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