Acidity R-0-H+H,ǒ：→ R-0 +H2O+ pK.≡I6 (K,=1016 alcohol alkoxide 0 R-C-0-H+H,0:←2 HO+ pK≡5 (K。=10-) acid carboxylate R-O- + H.O+ R一OH+H2O 0=0X R- HO+ R一COOH+HO stabilization of carboxylate Copyright2005 Pearson Prentice Hall,Inc. Acidity