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  4. Among the following compounds the most acidic is

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Q. Among the following compounds the most acidic is

NTA AbhyasNTA Abhyas 2020Organic Chemistry – Some Basic Principles and Techniques

Solution:

Acidic nature $ \propto $ electron withdrawing group $\left(- I , \, - R\right)$ , ortho effect

Acidic nature $ \propto \frac{1}{e l e c t r o n \, r e l e a s i n g \, g r o u p \, \left(+ I , + R\right)}$

A carboxylic acid is more acidic than phenol due to more stability of conjugate base.

Due to ortho effect o- hydroxyl benzoic acid is strongest acid here and correct order of decreasing of acidic nature is

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