Acidity of Some Carboxylic Acids Structure pKa Stronger F.CCOOH 023 acid ClCCOOH 0.64 ClCHCOOH 1,26 FCH COOH 2.59 CICH COOH 2.85 三| BrCH COoH 289 HOCH COOH 383 PhCH, COoH 4.31 Weaker CH COOH 4.72 acidOrganic Chemistry Organic Chemistry Xiamen Xiamen University University Acidity of Some Carboxylic Acids Stronger acid Weaker acid CH 3COOH 4.72 PhCH 2COOH 4.31 HOCH 2COOH 3.83 BrCH 2COOH 2.89 ClCH 2COOH 2.85 FCH 2COOH 2.59 Cl 2CHCOOH 1.26 Cl 3 CCOOH 0.64 F 3 CCOOH 0.23 Structure p Ka