Q. The strongest acid amongst the following compounds is
A) $CH_{3}COOH$
B) $HCOOH$
C) ${CH}_{3}CH_{2}CH(Cl)CO_{2}H$
D) $ClCH_{2}CH_{2}CH_{2}COOH$
Explanation
(c)
Electron withdrawing group (-I effect) stabilizes the anion, and thus increases acidic nature.
Thus (c), (d)> (a), (b) acidic
Farther the electron withdrawing group from the –COOH group, its effect in increasing acid strength decreases thus (c) with Cl at $\alpha -$position is stronger than (d) with Cl at $\gamma -$position.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.