Thermodynamics of the Association Reaction of Na and Br- Ions in 70, 80, 90, and 95 Mass per Cent 2-Butanol Water MixturesReport as inadecuate




Thermodynamics of the Association Reaction of Na and Br- Ions in 70, 80, 90, and 95 Mass per Cent 2-Butanol Water Mixtures - Download this document for free, or read online. Document in PDF available to download.

Croatica Chemica Acta, Vol.71 No.3 October 1998. -

Molar conductivities of NaBr electrolyte in 2-butanol + water mixtures w2-butanol = 0.7, 0.8, 0.9, 0.95 were mesaured in the temperature range from 288.15 to 308.15 K at 5 K intervals. By processing the obtained data using the conductivity equations after Fuoss-Hsia and Lee-Wheaton it was not possible to establish a reliable value for the distance of the ions in the ion-pairs formed R. The processing was therefore repeated using the same equations with R = qBjerrum . The association constants KA obtained by both equations at different temperatures enable calculation of the standard thermodynamic quantities ΔH° and Δ S° for the association reaction. The obtained thermodynamic quantities, together with the limiting molar conductivity Λ0, were compared with the analogous data from literature for HBr electrolyte in the same mixtures, and for NaBr electrolyte in t-butanol + water mixtures.



Author: Ivo Tominić - ; Laboratory of Physical Chemistry, Faculty of Technology, University of Split, Teslina 10, HR-21000 Split, Croati

Source: http://hrcak.srce.hr/



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