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Journal of Chemistry
Volume 2013, Article ID 858374, 10 pages
http://dx.doi.org/10.1155/2013/858374
Research Article

The Audio Frequency Conductance Study of Some Metal Succinate Salts in Aqueous Medium at Different Temperatures (Part I: Magnesium, Manganese (II), Barium and Copper Succinates)

1Department of Chemistry, College of Science, University of Koya, Koya Town, Iraq
2Department of Chemistry, College of Science, University of Basrah, Basrah City, Iraq
3Koya Technical Institute, Department of oil Refinery, Koya Town, Iraq

Received 5 January 2012; Revised 25 June 2012; Accepted 26 June 2012

Academic Editor: Jose Corchado

Copyright © 2013 Kosrat N. Kaka et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The audio electrical conductances of aqueous solutions of magnesium, manganese II, barium, and copper succinates have been measured at various temperatures in the range of 298.15 K to 313.15 K, using an audio frequency conductance bridge. The evaluation of conductance data was carried out by minimisation technique using the theoretical equations of the complete and modified forms of Pitts (P) and Fuoss-Hsia (F-H), each a three-parameter equation, association constant (𝐾𝐴), molar conductance (Ξ›π‘š), and distance parameter (a). Quantitative results showed that these salts do not behave as β€œstrong” electrolytes, and that their dissociations are far from complete. The abnormally low conductances of these electrolytes are not due to the presence of electrically neutral molecules but to the ion-pair formation. The Walden product values, as well as the standard thermodynamics functions (Ξ”π»βˆ˜, Ξ”πΊβˆ˜, Ξ”π‘†βˆ˜) for the association reaction at the four temperatures studied, have been evaluated.