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V. P. Korolev Institute of Solution Chemistry, Russian Academy of Sciences, 1, Academicheskaya str, 153045, Ivanovo, Russia

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O. A. Antonova Institute of Solution Chemistry, Russian Academy of Sciences, 1, Academicheskaya str, 153045, Ivanovo, Russia

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N. L. Smirnova Institute of Solution Chemistry, Russian Academy of Sciences, 1, Academicheskaya str, 153045, Ivanovo, Russia

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A. V. Kustov Institute of Solution Chemistry, Russian Academy of Sciences, 1, Academicheskaya str, 153045, Ivanovo, Russia

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Abstract

The enthalpies of solution of tetraethyl- and tetra-n-hexylammonium bromides have been measured in mixtures of formamide with ethylene glycol at 298.15 and 313.15 K in the whole mole fraction range by the calorimetric method. The standard enthalpies of solution in binary mixtures have been calculated with Redlich–Rosenfeld–Meyer type equation. The enthalpy and heat capacity parameters of pair interaction of organic electrolytes with EG in FA and with FA in EG have been computed and discussed. The enthalpy interaction parameters of single ions with EG in FA medium have been evaluated and compared with those for ion–water and ion–MeOH interaction in FA. The standard heat capacities of solution have been evaluated. The excess enthalpies of solution, ΔsolHE, of Et4NBr, Bu4NBr, and Hex4NBr have been determined. The ΔsolHE values are positive for Et4NBr and negative for Bu4NBr and Hex4NBr and become more negative from Bu4NBr to Hex4NBr.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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