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Account for the Following: Pka Value of 4-nitrobenzoic Acid is Lower than that of Benzoic Acid. - CBSE (Science) Class 12 - Chemistry

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Question

Account for the following:

pKa value of 4-nitrobenzoic acid is lower than that of benzoic acid.

Solution

The conjugate base formed after the removal of hydrogen is highly stable due to the presence of electron withdrawing group (NO2). Hence, it is more acidic than the benzoic acid.

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Solution Account for the Following: Pka Value of 4-nitrobenzoic Acid is Lower than that of Benzoic Acid. Concept: Physical Properties of Carboxylic Acids.
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