Q. Which of the following represents the correct order of the acidity in the given compounds?
A) FCH₂COOH > CH₃COOH > BrCH₂COOH > ClCH₂COOH
B) BrCH₂COOH > ClCH₂COOH > FCH₂COOH > CH₃COOH
C) FCH₂COOH > ClCH₂COOH > BrCH₂COOH > CH₃COOH
D) CH₃ COOH > BrCH₂COOH > ClCH₂COOH > FCH₂COOH
Explanation
[Solution from source] Electron-withdrawing halogens stabilise the carboxylate ion, more so with higher electronegativity: F > Cl > Br, and unsubstituted acetic acid is weakest. So FCH₂COOH > ClCH₂COOH > BrCH₂COOH > CH₃COOH. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.