NEET Chemistry Reactions of Carboxylic Acids MCQ Question with Solution

The pKa of chloroacetic acid (ClCH2COOH) is approximately 2.86. Considering the acidity order from the NCERT context, what is the pKa of fluoroacetic acid (FCH2COOH) likely to be?

A

2.66

B

3.08

C

2.34

D

3.50

Correct Answer

Option A

Detailed Explanation

Fluoroacetic acid (FCH2COOH) is more acidic than chloroacetic acid (ClCH2COOH) because fluorine is more electronegative than chlorine, resulting in a lower pKa value.

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