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Grade 12th passOrganic Chemistry

how to find the most acidic compound?????? …..........................................................................................................................

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Profile image of vandana
6 Years agoGrade 12th pass
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Profile image of Saurabh Koranglekar
ApprovedApproved Tutor Answer6 Years ago
Presence of electron withdrawing group increases the acidic strength of carboxylic acid.
So in option (II) and (III) the oxygen (electron withdrawing) makes it more acidic, but presence of oxygen in (II) is near to carboxylic group which makes it more acidic than (III) as it contains oxygen a bit away from the carboxylic group.
The correct order of acidity isII>III>I.