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The increasing order of the pKa values o...

The increasing order of the pKa values of the following compounds is:

A

B lt C lt D lt A

B

C lt B lt A lt D

C

D lt A lt C lt B

D

B lt C lt A lt D

Text Solution

Verified by Experts

The correct Answer is:
D
More the acidic strength, lesser will be the value of `pK_(a)`
is most acidic as it’s conjugate base is resonance stabilized by `NO_(2)` group
Overall order of acidic strength

Order of `pK_(a)` : `B lt C lt A lt D` Conjugate base is destabilized by +M of –OMe, hence least acidic
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