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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 substrate

Correct answer: Polarity of solvent

Solution

The reaction of phenol with bromine varies in different solvents due to the polarity of the solvent, which affects the solubility and reactivity of the phenol and bromine, leading to different reaction pathways and products.

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