Question

The correct order of strengths of the carboxylic acids

A. I gt II gt III
B. II gt III gt I
C. III gt II gt I
D. II gt I gt III

Answer 1

Correct Answer - B
Key idea Order of strengths of the given carboxylic acids can be determined by the concept of I-effect.
The oxygen atom present in the ring shows I-effect. As the distance between oxygen and -COOH group increases, -I effect of oxygen decreases.
Thus, corresponding carboxylic acid will show less acidic nature.
The correct order of strengths of the carboxylic acids is