24. Alanine, H2NCH(CH3)CO2H, has Ka = 4.5×10–3 and Kb = 7.4×10–5 . What species has the highest concentration at a pH of 7.00 in H2O? (Please use Structural Formula to demonstrate your answer)(log4.5=0.65,log7.4=0.87) 【第 33 格答案】