Concept:Acidity relies heavily on the resonance stabilization of the resulting conjugate base.
Formula:Not applicable to this conceptual question.
Solution:- When phenol donates a proton, it forms the phenoxide ion (\(\text{C}_6\text{H}_5\text{O}^-\)).
- The negative charge left on the oxygen atom is delocalized (spread out) into the \(\pi\)-system of the aromatic ring through resonance.
- This delocalization of negative charge in the ring vastly stabilizes the ion, making the forward acidic reaction highly favorable compared to aliphatic alcohols (which cannot delocalize).
Why other options are incorrect:The charge is negative, not positive (rules out B and D). The delocalization happens
away from the OH group and into the aromatic ring, making Option A technically inaccurate.
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