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Which is called the strongest carboxylic acid among these?
ADichloroacetic acid
BTrifluoroacetic acid
CPhenylacetic acid
DPropanoic acid
Answer & Solution
Correct answer: B. Trifluoroacetic acid
With a pKa of 0.23 it is far stronger than acetic acid at 4.76, because three fluorines stabilise the anion.
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