Acidity of Chlorosubstituted Butanoic Acid Structure Ka CHCH CHCICOOH 286 CH CHCICHCOOH 4.05 CICHCHCHCOOH 4.52 C HCHCHCOOH 482Organic Chemistry Organic Chemistry Xiamen Xiamen University University Acidity of Chlorosubstituted Butanoic Acid CH 3CH 2CH 2COOH 4.82 ClCH 2CH 2CH 2COOH 4.52 CH 3CHClCH 2COOH 4.05 CH 3CH 2CHClCOOH 2.86 Structure pKa