Why does the presence of electron-withdrawing groups in substituted phenols enhance their acidic strength?

Question

Why does the presence of electron-withdrawing groups in substituted phenols enhance their acidic strength?, They increase electron density in the phenoxide ion., They stabilise the phenoxide ion through resonance., They decrease the electron density in the phenoxide ion., They promote the formation of alkyl groups.

MARKS App · Accepted Answer

Electron-withdrawing groups, such as nitro groups, enhance the acidic strength of phenols by stabilising the resulting phenoxide ion through resonance, making it more likely to donate a proton.

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