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Consider the acidity of the carboxylic a...

Consider the acidity of the carboxylic acids
I. `PhCOOH`
II. `O - NO_(2)C_(6)H_(4)COOH`
III. `pNO_(2)C_(6)H_(4)COOH`
IV. `m-NO_(2)C_(6)H_(4)COOH`
Which of the following order is correct

A

`I gt II gt III gt IV`

B

`II gt IV gt III gt I`

C

`II gt IV gt I gt III`

D

`II gt III gt IV gt I`

Text Solution

Verified by Experts

The correct Answer is:
D
Electron withdrawing group increases the acidity of benzoic acid, `o-`isomer will have higher acidity than `m` and `p` isomer due to ortho effect. The `NO_(2)` group at `p` position have more pronounce electron withdrawing effect than `-NO_(2)` group at `m` position. Hence order of acidity is
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