Question

Which of the following gives most easily electrophilic substitution reaction :

Answer 1

Answer:

In acidic medium phenol will undergo electrophilic substitution much faster than aniline.

In acidic medium phenol will undergo electrophilic substitution much faster than aniline.Both aniline and phenol undergo electrophilic substitution more easily than benzene in neutral conditions because of the +M effect of the NH2 and OH groups that activate the benzene ring at the ortho and para positions.

In acidic medium phenol will undergo electrophilic substitution much faster than aniline.Both aniline and phenol undergo electrophilic substitution more easily than benzene in neutral conditions because of the +M effect of the NH2 and OH groups that activate the benzene ring at the ortho and para positions.Aniline is a weak base, and in acidic medium it accepts a proton to become the positively charged anilinium ion (C6H5NH3+), which is no longer as vulnerable to attack by an electrophile as in neutral medium.