Which is the strongest acid (pKa, value is given) ?

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HCOOH[3.77]

C6H5COOH[4.22]

CH3COOH[4.7]

CH3CH2COOH[4.88]

answer is A.

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Detailed Solution

∵ Strength of acid ∝1pKa.. Formic acid will be the strongest acid.

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