Which of the following has the most acidic hy | vedclass

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(C) The acidity of carboxylic acids is determined by the stability of the conjugate base (carboxylate ion). Electron-withdrawing groups ($-I$ effect)

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Trichloroacetic acid

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(C) The acidity of carboxylic acids is determined by the stability of the conjugate base (carboxylate ion). Electron-withdrawing groups ($-I$ effect) stabilize the carboxylate ion by dispersing the negative charge,thereby increasing acidity. $CH_3CH_2COOH$ (Propanoic acid) has no $-I$ group. $ClCH_2COOH$ (Chloroacetic acid) has one $-I$ group. $Cl_2CHCOOH$ (Dichloroacetic acid) has two $-I$ groups. $Cl_3CCOOH$ (Trichloroacetic acid) has three $-I$ groups. Since the number of $-I$ groups is highest in Trichloroacetic acid,it is the most acidic.

Which of the following has the most acidic hydrogen?

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