Question

The weakest acid amongst the following is

• A. $\mathrm{ClCH}{}_2\mathrm{COOH}$
• B. $\mathrm{HCOOH}$
• C. $\mathrm{FCH}{}_2\mathrm{CH}{}_2\mathrm{COOH}$
• D. $\mathrm{CH}{}_2(\mathrm{I})\mathrm{COOH}$

Answer 1

Answer: (B)

Proton doners are acids. Electron withdrawing groups (like halogens) increase the acidity of carboxylic acids. Therefore, HCOOH is weakest acid among the given choices.