Original scientific paper

The Stability Constants of Cadmium Chloride Complexes in 2-Propanol-Water Mixtures (0, 10, 30 and 50 Mass per Cent) from Electromotive Force Measurements

M. Višić ; Laboratory of Physical Chemistry, Faculty of Technology, University of Split, 58000 Split, Teslina 10, Croatia
A Jadrić ; Laboratory of Physical Chemistry, Faculty of Technology, University of Split, 58000 Split, Teslina 10, Croatia
I. Mekjavić ; Laboratory of Physical Chemistry, Faculty of Technology, University of Split, 58000 Split, Teslina 10, Croatia

Abstract

Stability constants (Krl) were determined for different Cd-chloride complexes at different ionic strengths in 2-propanol-water mixtures (containing 0, 10, 30 and 50 mass percent of 2-propanol) by a potentiometric method at 288.15, 298.15 and 313.15 K. From these values, stability constants at zero ionic strength (Kfr) for CdCl+, CdCl2 and CđCly complexes in an aqueous solution and 10 mass per cent 2-propanol were obtained, and in other mixtures also for the CdCl|- complex. The reactions forming all these complexes are endothermic, leading to an increase in entropy. The constant dependencies on the dielectric constants of the solvents were determined and comparison with literature data for methanol-water and ethanol-water was carried out.

Keywords

Hrčak ID:

137050

URI

https://hrcak.srce.hr/137050

Publication date:

1.3.1994.

Visits: 947 *