2015-化学奥赛有机化学-v.pdf

—— 1 —— R—COOH R O = R—COOH R—C—Y — G 2 —— ♦ CH COOH 3 HOOCCH CH COOH 2 2 HO−C(CH COOH) COOH 2 2 ♦ R Ar−COOH Ph−COOH R−COOH COOH COOH 3 —— δ- O δ+ R C C O H H — α-H — — 4 —— RCOOH + H O RCOO- + H O+ 2 3 ♦ [ RCOO- ][H+ ] Ka = pKa = - log Ka [ RCOOH ] KapKa • •pKa3~5