Question:
Assertion (A): In the dissociation of PCl5 at constant pressure and
temperature addition of helium at equilibrium increases the
dissociation of PCl5.
Reason (R): Helium removes Cl2 from the field of action.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) Both A and R are false.
Solution:
Option (iv) Both A and R are false is the answer.