Rank in the order of increasing acidic strength: - Vidyadip

MCQ

Rank in the order of increasing acidic strength:

A
$A < B < C$
B
$A < C < B$
✓
$B < A < C$
D
$B < C < A$

✓

Answer

Correct option: C.

$B < A < C$

c
The greater $I$ effect is favorable or greater acidic strength. The $-I$ effect of aldehyde group is greater than the ester group. Due to this $C$ will be most acidic. In $A$ and $B , B$ will be less acidic as it has $-I$ effect sort of localized due to ester group being on a single carbon. In $A$ it is more delocalized is not effective on more by adjacent carbons.

Hence, the required order is- $B\, <\, A\, <\, C$.

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