Q. The weakest acid amongst the following is
A) $ClCH_{2}COOH$
B) $HCOOH$
C) $FCH_{2}CH_{2}COOH$
D) $CH_{2}(I)COOH$
Explanation
(d)
The strength of carboxylic acid depends upon the nature of the electron withdrawing halogen atom. Greater the electron withdrawing influence of the halogen atom stronger will be the acid. The electron withdrawing effect of the halogen decreases as
$\ \ \ \ \ \ F > Cl > Br > I$
Hence, $CH_{2}(I).COOH\$is the weakest acid among these.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.