The rate of electrophilic substitution reacti | vedclass

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Question

(B) In phenol,the $-OH$ group is a strongly activating group due to the $+R$ (resonance) effect. It increases the electron density in the benzene ring

Vedclass · Accepted Answer

Faster than in benzene

Vedclass · Answer

(B) In phenol,the $-OH$ group is a strongly activating group due to the $+R$ (resonance) effect. It increases the electron density in the benzene ring,especially at the ortho and para positions. Since electrophilic substitution reactions are favored by high electron density,the presence of the $-OH$ group makes the ring much more reactive towards electrophiles compared to benzene. Therefore,the rate of electrophilic substitution in phenol is faster than in benzene.

The rate of electrophilic substitution reaction in phenol is:

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