Question

arrange the following in order of decreasing acid strength.
give reason for your answer.
Acetic Acid
tri chloro Acetic Acid
tri fluoro Acetic Acid
chloro Acetic Acid
propanoic acid ​

Answer 1

Explanation:

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Answer 2

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Triflouro acetic acid > Trichloro acetic acid > Chloro acetic acid > Acetic acid > Propanoic acid

The Flouro group is more electronegative and stronger -I group, so, triflouro acetic acid is more acidic than trichloro acetic acid. And, there are three chlorine atoms in tricloro acetic acid, than in chloro acetic acid. There is a longer alkyl group in propanoic acid than in acetic acid. That's why this is the order