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Grade 12th passOrganic Chemistry

Which of the following has the greates pKa value??
  1. ClCH2COOH
  2. Cl2CHCOOH
  3. Cl3CCOOH
  4. CH3COOH
ALTSM 15/03 Q26

Profile image of ANMOL SETH
11 Years agoGrade 12th pass
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1 Answer

Profile image of naina
ApprovedApproved Tutor Answer11 Years ago
ch3cooh has greatest pka value since its d weakest acid among d given acids.the rest all acids are alpha halo carboxylic acids whose conjugate base(after donating h+)is stabilised due to – i (inductive ) effect of d chlorine atoms.