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Grade 12Organic Chemistry

compare acidic strength of formic acid ; benzoic acid nd acetic acid

Profile image of sunali
7 Years agoGrade 12
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1 Answer

Profile image of Arun
ApprovedApproved Tutor Answer7 Years ago

Benzoic acid is stronger than acetic acid .

An electron attracting group i.e -I effect group is present in benzoic acid while electron releasing group i.e +I effect group is present in acetic acid.

-I effect group increases the acedic strenght of an acid.

+I effect decreases the acidic strenth of an acid .

And Formic acid is stronger than acetic acid

An electron releasing group i.e+I effect is present in acetic acid whereas no such releasing group is present in formic acid and as we have seen +I effect decreases acidic strenght of an acid .

Therefore C6H5COOH(benzoic acid) is stronger than acetic acid(CH3COOH) .

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