Ncert Exercises & Solutions

Select the correct option based on statements below:

Assertion (A):	p-Nitrophenol is more acidic than phenol.
Reason (R):	Nitro group helps in the stabilization of the phenoxide ion by dispersal of negative charge due to resonance.

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.

Hint: Electron-withdrawing group in phenol increases the acidity of phenol

p-Nitrophenol is more acidic than phenol because the nitro group helps in the stabilization of the phenoxide ion by dispersal

of negative charge due to resonance. The resonating structure is as follows: