羟基酸的化学性质 1.酸性 CH CH,cooh CH, CH, COOH CH3CHCOOH OH OH pKa 4.88 4.51 3.86 COOH COOH COOH COOH OH OH OH pKa3004.12 4.18 4.54二、羟基酸的化学性质 1. 酸性 CH3 CH2 COOH CH2 CH2 COOH OH CH3 CHCOOH OH pKa 4.88 4.51 3.86 COOH OH COOH OH OH COOH COOH pKa 3.00 4.12 4.18 4.54