Formation of Glycinate Complexes of Iron(II) in Solutions of Different Ionic Strengths

被引：4

作者：

Rakhimova, M. ^{[1
]}

Eshova, G. B. ^{[1
]}

Davlatshoeva, Dz A. ^{[1
]}

Kvyatkovskaya, L., V ^{[1
]}

Miraminzoda, F. ^{[1
]}

机构：

[1] Tajik Natl Univ, Dushanbe 734025, Tajikistan

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2020年 / 94卷 / 08期

关键词：

iron(II); complexation; constant of formation; ion strength; solution; electromotive force;

D O I：

10.1134/S0036024420080233

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Processes of complexation in the Fe(0)-Fe(II)-glycine-Na(H)ClO4-H2O system at a temperature of 298.15 K, an ionic strength of solutions of 0.1-1.0 (NaClO4), C-Fe(II)= 1 x 10(-3), and in the pH range of 0.8-8.0 are studied according to the Clark-Nikolsky oxidation potential. Experimental curves are obtained for the dependences of EMF on concentration, pH, pC(Fe(II)), pC(HL). Successive approximation of theoretical and experimental oxidative potential functions is used to calculate the constants of complexation. The dependence of the constant of complexation on the ionic strength of the solution is calculated on the basis of the Debye-Huckel theory. It is found that the formation constants of coordination compounds fall as the ionic strength of a solution rises.

引用

页码：1560 / 1564

页数：5

共 15 条

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Eshova, G. B.
Davlatshoeva, J. A.
Rakhimova, M. M.
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Kvyatkovskaya, L. V.
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