THE EFFECT OF IONIC STRENGTH ON THE ACID – BASE PROPERTIES OF GLYCINE IN AN AQUEOUS SOLUTION-Reference-Cited by-同舟云学术

THE EFFECT OF IONIC STRENGTH ON THE ACID – BASE PROPERTIES OF GLYCINE IN AN AQUEOUS SOLUTION

Published:2024-01-08 Issue:1 Volume:2024 Page:
ISSN:2413-5151
Container-title:THE BULLETIN OF THE TAJIK NATIONAL UNIVERSITY. SERIES OF ECONOMIC AND SOCIAL SCIENCES
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Author:

Eshova Chaykhana Bobonazarovna

Abstract

The processes of glycine ionization (Gly) have been studied by potentiometry and the values of pKa1 and pKa2 at 288.15 K, the ionic strength of the solution (Na(H)CIO4) have been calculated) 0.1, 0.25, 0.5, 0.75, 1.0 mol/l and concentrations 1.0÷3.0 · 10-3 mol/l with a confidence probability of P = 0.95. With an increase in ionic strength and temperature, the pK of both amino and carboxyl groups and functional groups of the side radical decreases, which indicates an increase in the degree of their ionization and is consistent with the theory of weak electrolytes.

Publisher

Scientific Journals Publishing House

Reference17 articles.

1. Traven, V. F. Organic chemistry / V. F. Traven // M. Binom. 2013. - Vol. 3. - P. 388.

2. Yakubke, H.D. Amino Acids / H.D. Jakubke, H. Eshkait // Peptides. Belki. M.: Mir, 1985. – P. 456.

3. Syrovaya, A.O. Amino acids through the eyes of chemists, pharmacists, biologists: in 2 volumes, Vol. 1. H.: / A.O. Syrovaya, L.G. Shapoval, V.A. Makarov and others // Shchedra sadiba plus, 2014. – P. 228.

4. Abdelkarim, A.T. Potentiometric, thermodynamics and coordination properties for binary and mixed ligand complexes of copper(II) with cephradine antibiotic and some N- and O-bound amino acids (α-alanine and β-alanine) / T. Abdelkarim, W. H. Mahmoud, A.A. & El-Sherif // Journal of Molecular Liquids, 2021. V. 328. – Pp.115334.

5. Yusupov, Z.N. The influence of ionic strength on the values of the ionization constant of aminoethanic acid / Z.N. Yusupov, G.B. Eshova, S.S. Saidov // Doc. AN RT. - 2008. - vol. 51. - No. 8. – Pp.620-625.