Aldehydes, Ketones and Carboxylic Acids

Aldehydes, Ketones and Carboxylic Acids

Question

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

Answer

It is due to e with drawing nature of –NO2 attach at the para position of Benzene due to which tends to lose H+ ion increases and acidic character increases. 

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