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Arrange the following in the increasing ...

Arrange the following in the increasing order of acidic character.

A

`(iii) lt (i) lt (ii)`

B

`(ii) lt (i) lt (iii)`

C

`(iii) lt (ii) lt (i)`

D

`(i) lt (iii) lt (ii)`

Text Solution

Verified by Experts

The correct Answer is:
B
Hint :- `NO_2` group at p-position is electron withdrawing group. It decreases the electron density in O-H bond and proton losses easily so p-nitrophenol is most acidic. `-OCH_3` group at p-position is electron releasing group. It increases the electron density in O-H bond and proton losses with difficulty so p-methoxy phenol is least acidic.
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