Ionic strength dependence of formation constants. Part II: potentiometric study of the copper(II)-malonate-glycinate system in the range 0.01≤I≤1.0 |
| |
| Authors: | Pier G Daniele Carmelo Rigano Silvio Sammartano |
| |
| Institution: | (1) Istituto di Analisi Chimica Strumentale dell'Università, via Bidone 36, 10125 Torino, Italy;(2) Seminario Matematico dell'Università, viale A. Doria 6, 95125 Catania, Italy;(3) Istituto di Chimica Analitica dell'Università, via dei Verdi, 98100 Messina, Italy;(4) Istituto Dipartimentale di Chimica e Chimica Industriale dell'Università, viale A. Doria 6, 95125 Catania, Italy |
| |
| Abstract: | Summary The ternary copper(II)-malonate-glycinate system has been investigated by potentiometric measurements using a glass electrode, at 37° and at different ionic strengths (0.01 I1.0 mol dm–3), with KNO3 as background salt. Complex formation between K+ and malonate has also been taken into account, and the parameters for the dependence on ionic strength have been obtained for each formation constant. A general equation, valid for all the complexes formed in this system, for the dependence, log K=f(I), is also proposed. The stabilization parameters of the ternary complex are also analyzed as a function of the ionic strength. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
