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Potentiometric Determination of the Dissociation Constants of Glycylglycine in Various Aquo‐Organic Media

مؤلف البحث
Azab, H.A., El‐Nady, A.M., Hamed, M.M.A., Ahmed, I.T.
ملخص البحث

The dissociation constant values of glycylglycine were determined at 25 ± 0.1 °C (I = 0.1 mol L−1 KNO3) 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. Copyright © 1995 The Chemical Society Located in Taipei & Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim, Germany

قسم البحث
مجلة البحث

Journal of the Chinese Chemical Society
المشارك في البحث
الناشر
NULL
تصنيف البحث
1
عدد البحث
Volume 42, Issue 5
موقع البحث
NULL
سنة البحث
1995
صفحات البحث
Pages 769-772