Question

Why the parachlorophenol is more acidic than paraflurophenol

Answer 1

Answer:

This is because of the negative charge delocalizing on the vacant d-orbitals of chlorine atom present in the para position and this is not possible with fluorine atom. Thus, the conjugate base of p-chloro phenol is more stable and hence a weak base. So, p-chloro phenol is more acidic than p-fluoro phenol.

Answer 2

Answer:

This is because of the negative charge delocalizing on the vacant d-orbitals of chlorine atom present in the para position and this is not possible with fluorine atom. Thus, the conjugate base of p-chloro phenol is more stable and hence a weak base. So, p-chloro phenol is more acidic than p-fluoro phenol.