• 作者： Azab, H.A. ; El-Nady, A.M. ; Hamed, M.M.A. et al.
• 作者服務機構： Chemistry Dept., Faculty of Science, Assiut Univ., Assiut, Egypt
• 中文摘要： The dissociation constant values of glycylglycine were determined at 25.plmin.0.1.degree.C (I=0.1mol/L KNO/sub 3/) with potentiometric pH titration in pure water and various mixture of water and organic solvents. The organic solvents used were methanol, ethanol, N,N- dimethylformamide, dimethylsulfoxide, acetonitrile and dioxane. Initial estimates of the dissociation constants of glycylglycine were refined with ESAP2M computer program. The results obtained are discussed in terms of average macroscopic properties of the mixed solvents and the possible variation in microheterogeneity of the solvation shells around the solute.
• 英文摘要： --
• 中文關鍵字： Glycylglycine; Dissociation Constant; Potentiometry; Potentiometric Titration; Medium Effect
• 英文關鍵字： 甘胺酸基甘胺酸；解離常數；電位測定法；電位滴定法；介質效應