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Explain the terms inductive and electromeric effects. Which electron displacement effect explains the following correct order of the acidity of the carboxylic acids ?
(a) `CH_(3)COOH gt Cl_(2)CHCOOH gt ClCH_(2)COOH`
(b) `CH_(3)CH_(2)COOH gt (CH_(3))_(2)CHCOOH gt (CH_(3))_(3)COOH`

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For the details of the effects, Section 12.22 & Section 12.23
(a) The order of acidity is explained by `-I` effect of the chlorine atoms. Greater the magnitude of `-I` effect, easier will be the release of `H^(+)` from `O-H` bond and stringer will be acid.
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(b) The order of acidity is explained by `+ I` effect of alkyl groups. As the number of alkyl groups increases, the magnitude of `+ I` effect also increases. As a result, the release of `H^(+)` from `O-H` bond becomes more and more difficult and acidic strength decreases.
image

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