The correct order of decreasing acid strength of trichloroacetic acid – InterviewSolution

1.	The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), benzoic acid (C) and formic acid (D) is
Answer» AgtBgtCgtD AgtCgtBgtD BgtAgtDgtC BgtAgtCgtD Solution :SINCE F is more electronegative than CL, therefore, `CF_(2)COOH(B)` is a stronger acid than `C Cl_(3)COOH`. Further, since +R-effect of `C_(6)H_(5)` group outweighs its -I-effect, therefore, `C_(6)H_(5)COOH(C)` is a weaker acid than HCOOH (D). Thus, the overall acid strength decreases in the order: BgtAgtDgtC.

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