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Q.
Which of the following is the strongest acid:
Haryana PMTHaryana PMT 2002
Solution:
Due to the strongest $-I$ effect of $F$-atom $C F_{3} C O O H$ is strongest acid than rest other acids. Decreasing order of acidity
$CF _{3} COOH > CCl _{3} COOH > CH _{3} COOH > HCOOH$