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Chemistry
Which one of the following have least PKa value?
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Q. Which one of the following have least $ _{P}K_{a} $ value?
Rajasthan PMT
Rajasthan PMT 2003
Aldehydes Ketones and Carboxylic Acids
A
$ CCl_3COOH $
B
$ CH_2ClCOOH $
C
$ CF_3COOH $
D
$ CH_{3}COOH $
Solution:
$ CF_{3}COOH $ is the strongest acid due to greatest $-I$ effect of $F$ atom among $ Cl $ and $ CH_{3} $ .