The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to

The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to
  1. Hyperconjugation in substrate
  2. Polarity of solvent
  3. Free radical formation
  4. Electromeric effect of the substrate

Solution

Difference in reactions is observed due to solvent polarity, which

(i) Ionizes phenol to make more reactive phenoxide ion

(ii) Increases electrophilicity of bromine.

Asked in: JEE Main 2022 (26 Jul Shift 1)

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