Which of the following is the weakest acid?

CH₃COOH

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Cl₂CHCOOH

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Cl₃CCOOH

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ClCH₂COOH

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Solution

The correct option is A
CH₃COOH

Greater the number of electron withdrawing substituents ,greater would be the dispersal of the negative charge and hence stronger will be the acid. Hence the order of acidity is Cl₃CCOOH >Cl₂CHCOOH>ClCH₂COOH>CH₃COOH

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