Question:
Which of the following is the strongest acid?
Which of the following is the strongest acid?
Show Hint
Acidity $\propto$ Number of electronegative substituents.
Updated On: Apr 17, 2026
- Fluoroacetic acid
- Trifluoroacetic acid
- Chloroacetic acid
- Difluoroacetic acid
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Concept
Acidity increases with the presence of electron-withdrawing groups (Inductive effect $-I$).
Step 2: Analysis
Fluorine is more electronegative than Chlorine. The more Fluorine atoms attached to the alpha-carbon, the stronger the $-I$ effect, which stabilizes the carboxylate anion.
Step 3: Conclusion
Trifluoroacetic acid ($CF_3COOH$) has three Fluorine atoms, making it the strongest acid in the list. Final Answer:(D)
Acidity increases with the presence of electron-withdrawing groups (Inductive effect $-I$).
Step 2: Analysis
Fluorine is more electronegative than Chlorine. The more Fluorine atoms attached to the alpha-carbon, the stronger the $-I$ effect, which stabilizes the carboxylate anion.
Step 3: Conclusion
Trifluoroacetic acid ($CF_3COOH$) has three Fluorine atoms, making it the strongest acid in the list. Final Answer:(D)
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