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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > September  >
In the Laboratory
Determination of Equilibrium Constants of Metal Complexes from Spectrophotometric Measurements. An Undergraduate Laboratory Experiment
Gabriela A. Ibañez, Alejandro C. Olivieri, and Graciela M. Escandar*
Universidad Nacional de Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Departamento de Química Analítica, Suipacha 531, 2000 Rosario, Argentina
Cover
September 1999
Vol. 76 No. 9
p. 1277
Abstract
We describe an undergraduate laboratory practice involving the determination of complex equilibrium constants by spectrophotometric techniques. The results are obtained through model fitting using a computer program. As an example of these determinations, salicylic acid was selected and evaluated in the presence of copper(II) ion. The experimental conditions, general procedures, and computational strategem are discussed.
Supplement
Supplementary material provided is in the form of a program named EPSILON, with instruction files. It has been compressed as zip (for Windows) and sit (for Macintosh) files. The instructions for using the program are available as a pdf, accessible with Acrobat Reader.
*  Contents
*  Download
supp1277.zip

supp1277.sit

supp1277.pdf
More Information
*  Citation
 Iba–ez, Gabriela A.; Olivieri, Alejandro C.; Escandar, Graciela M. J. Chem. Educ. 1999 76 1277.
*  Keywords
 Instrumental Methods; Coordination Chemistry; Equilibrium; Laboratory Computing / Interfacing
*  History
 Created:
Last Updated:		 July 30, 1999
November 22, 2005
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