Which of the following is most acidic ? – InterviewSolution

1.	Which of the following is most acidic ?
Answer» Solution :The PHENOXIDE ion left from o-hydorxybenzaldehyde and p-hydroxybenzaldehyde are stabilised by `-L` and `-R-` EFFECT of the `-CHO` group. But in o-isomer DUE to chelation it is difficult to remove that H-atom. HENCE, p-hydroxybenzaldehyde is the strongest acid.

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