Explain why p-nitrophenol is more acidic than phenol. - Vidyadip

Question

Explain why p-nitrophenol is more acidic than phenol.

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Answer

In substituted phenols, the presence of electron withdrawing groups such as nitro groups, enhances the acidic strength of phenol. This effect is more pronounced when such a group is present at ortho and para positions. It is due to the effective delocalisation of negative charge in phenoxide ion.

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