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.
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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