The strongest acid among the following aromatic compound is:

o-Nitrophenol

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p-Chlorophenol

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p-Nitrophenol

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m-Nitrophenol

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Solution

The correct option is B p-Nitrophenol
The strongest acid among the following aromatic compound is p-Nitrophenol. When strong electron withdrawing nitro group is present in para position, the loss of proton from -OH group becomes easy as the phenoxide ion is resonance stablizied and nitro group decreases electron density from phenoxide ion. This increases the acidic behaviour.

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Similar questions

Among the following compounds:

I) Phenol II) Methylphenol III) m-nitrophenol IV) p-nitrophenol

The acidity order is:

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