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Arrange the following in increasing order of acid strength: ClCH_(2)COOH,CH_(3)CH_(2)COOH,ClCH_(2)CH_(2)COOH,(CH_(3))_(2)CHCOOH,CH_(3)COOH |
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Answer» Solution :SINCE the +I-effect of alkyl groups decreases in the order: `(CH_(3))_(2)CH- gt CH_(3)CH_(2)- gt CH_(3) -`, therefore, ACID strength increases in the order : `(CH_(3))_(2)CHCOOH lt CH_(3)CH_(2) COOH lt CH_(3)COOH` Further, since -I-effect decreases with distance, therefore, `ClCH_(2)CH_(2)COOH` is a weaker acid than `ClCH_(2)COOH`. combining these two trends, the acid strength increases in the order: `(CH_(3))_(2)CHCOOH lt CH_(3)CH_(2)COOH lt CH_(3)COOH lt ClCH_(2)CH_(2)COOH lt ClCH_(2)COOH`. |
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