European Journal of Chemistry

The effect of temperature on association constants and conductivities of ferrous chloride and ferric chloride in DMF-water mixtures

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Published: Dec 31, 2012
DOI: https://doi.org/10.5155/eurjchem.3.4.399-403.675
Keywords:
Ferric chloride, Ferrous chloride, Association constant, DMF-water mixtures, Electrolytic conductivity, Temperature dependence
Section
Research Article
Issue
Vol. 3 No. 4 (2012): December 2012
Dates
Received 2012-08-24
Accepted 2012-09-28
Published 2012-12-31


Main Article Content

Süheyla Pura Ergin
Istanbul University, Engineering Faculty, Department of Chemistry, Avcilar, Istanbul, TR-34320, Turkey

Abstract

Conductance measurements at five different temperatures varying from 288.15 to 328.15 K were performed for ferrous chloride (FeCl2) and ferric chloride (FeCl3) in 20-80 wt % in N,N-dimethylformamide (DMF)-water mixture. To analyze conductivity data, density and viscosity values of the DMF-water mixtures have been determined experimentally at the same temperatures. The conductivity data has been analyzed using the Kraus-Bray and Shedlovsky models. The limiting equivalent conductance values, the association constants (KA), thermodynamic parameters of association (Gibbs energy, enthalpy and entropy changes) for FeCl2 and FeCl3 were calculated and discussed depending on temperature and the composition of solvent mixture.

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Ergin, S. P. The Effect of Temperature on Association Constants and Conductivities of Ferrous Chloride and Ferric Chloride in DMF-Water Mixtures. Eur. J. Chem. 2012, 3, 399-403.

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