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Which is more acidic CF3COOH or CCl3COOH ie trifluoroacetic acid or trichloro acetic acid

Which is more acidic CF3COOH or CCl3COOH ie trifluoroacetic acid or trichloro acetic acid

Grade:11

1 Answers

Arun
25750 Points
6 years ago
CF3COOH > CCl3COOH
Electronegativity ( Ability to withdraw electron / negative charge ) 

[ Highest ] Fluorine > Chlorine 
 
CF3COOH __ ( 3 Fluorines on Alpha Carbon ) __ pKa = 0.3 

CCl3COOH __ ( 3 Chlorines on Alpha Carbon ) __ pKa = 0.77 
 
Hope it helps

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