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4-Aminobenzoic acid has a lower pKa value compared to aniline.(a) True(b) FalseI have been asked this question in quiz.I would like to ask this question from Amines Chemical Reactions topic in division Amines of Chemistry – Class 12

Answer» RIGHT CHOICE is (a) True

The best I can explain: Lower PKA value means more acidic, that is less basic, which means a HIGHER pKb value than aniline. 4-Aminobenzoic acid can be thought of as aniline with COOH group substituted at para position. Since COOH is electron WITHDRAWING in nature, it reduces the basic strength of aniline.


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