The order of strengths of the following carbo | vedclass

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(A) The acidity of carboxylic acids depends on the stability of the carboxylate anion formed after the loss of a proton. $(iii)$ $C_6H_5-COOH$ is the

Vedclass · Accepted Answer

$iii > iv > ii > i$

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(A) The acidity of carboxylic acids depends on the stability of the carboxylate anion formed after the loss of a proton. $(iii)$ $C_6H_5-COOH$ is the strongest acid because the phenyl group exerts a $-I$ effect and resonance stabilization. $(iv)$ $C_6H_5-CH_2-COOH$ is stronger than aliphatic acids due to the $-I$ effect of the phenyl group,but weaker than benzoic acid because the phenyl group is separated by a $CH_2$ group. Between $(ii)$ $CH_3-COOH$ and $(i)$ $CH_3-CH_2-COOH$,the $+I$ effect of the ethyl group in $(i)$ is greater than the methyl group in $(ii)$,making $(i)$ less acidic than $(ii)$. Therefore,the correct order of acidity is $iii > iv > ii > i$.

The order of strengths of the following carboxylic acids is:
$(i)$ $CH_3-CH_2-COOH$
$(ii)$ $CH_3-COOH$
$(iii)$ $C_6H_5-COOH$
$(iv)$ $C_6H_5-CH_2-COOH$

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The order of strengths of the following carboxylic acids is: $(i)$ $CH_3-CH_2-COOH$ $(ii)$ $CH_3-COOH$ $(iii)$ $C_6H_5-COOH$ $(iv)$ $C_6H_5-CH_2-COOH$