Acidity R-0-H+H,0:←→ R-0: pK。≡16 +HO+ (K。≡1016 alcohol alkoxide 0 R-C-0-H+H,:→ R HO+ pK≡5 + (K。=10-5) acid carboxylate R—O- +HO+ R-OH H2O R 0-0以 + HO+ R-COOH H2O stabilization 0 of carboxylate Copyright 2005 Pearson Prentice Hall,Inc.Acidity