Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	In the dissociation of PCl₅ at constant pressure and temperature, the addition of helium at equilibrium increases the dissociation of PCl₅.
Reason (R):	Helium reacts with Cl₂ .

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	(A) is False but (R) is True.