# What will be the order of acidity in the following compounds? [closed]

What will be the order of acidity in the following compounds ? From My point of view it should be 3>1>2>4. But the answer given is 3>2>1>4. Can anyone explain how ?

## closed as off-topic by Mithoron, user55119, airhuff, MaxW, Jon CusterMay 10 at 14:15

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I think you are correct. The $$\mathrm{p}K_\mathrm{a}$$ of 4-methylphenylacetic acid is quoted as 4.37 here. The $$\mathrm{p}K_\mathrm{a}$$ of benzoic acid is quoted as 4.19 by the same source here.