Which of the following would be expected to b | vedclass

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(C) The acidity of carboxylic acids is increased by the presence of electron-withdrawing groups $(EWG)$ due to the inductive effect ($-I$ effect).Grea

Vedclass · Accepted Answer

$CH_3-CH_2-CCl_2-COOH$

Vedclass · Answer

(C) The acidity of carboxylic acids is increased by the presence of electron-withdrawing groups $(EWG)$ due to the inductive effect ($-I$ effect).Greater the number of $EWG$ and closer they are to the carboxyl group,the stronger the acid.In $CH_3-CH_2-CCl_2-COOH$,there are two chlorine atoms on the $\alpha$-carbon,which exert a strong $-I$ effect,stabilizing the carboxylate anion significantly.Therefore,$CH_3-CH_2-CCl_2-COOH$ is the strongest acid among the given options and will be most highly ionised in water.

Which of the following would be expected to be most highly ionised in water?

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