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Identify the correct set from the follow...

Identify the correct set from the following

A

`{:("Compound",pK_(a)),("m-nitrophenol",10.2):}`

B

`{:("Compound",pK_(a)),("o-nitrophenol",10.2):}`

C

`{:("Compound",pK_(a)),("m-nitrophenol",7.2):}`

D

`{:("Compound",pK_(a)),("o-nitrophenol",7.2):}`

Text Solution

Verified by Experts

The correct Answer is:
D
In o-nitrophenol there is intramolecular H-bonding, since -`NO_(2)` group is very close to -OH group. Thus, proton can not be easily released from o-nitrophenol as compared to para nad meta. Thus, `pK_(a)` is least.
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