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Thermodynamic properties of solubility of 2-methyl-5-arylfuran-3-carboxylic acids in organic solvents

Iryna Sobechko1, Volodymyr Dibrivnyi1, Yuri Horak2, Nadiia Velychkivska3, Victoriia Kochubei1, Mykola Obushak2
Affiliation: 
1 Lviv Polytechnic National University, S.Bandery St., 12, 79013 Lviv, Ukraine; 2 Ivan Franko National University of Lviv, Kyryla i Mefodiya St. 6, 79005 Lviv, Ukraine 3 Institute of Macromolecular Chemistry AS CR, v.v.i., 2 Heyrovskeho Sq., 16206 Prague, Czech Republic
DOI: 
https://doi.org/10.23939/chcht11.04.397
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Keywords:

Abstract: 
The temperature dependencies of both acids solubility in acetonitrile, dimethylketone, isopropanol, ethylacetate and benzene were investigated. The results were represented by Shredder’s equation according to which enthalpies, entropies and Gibbs energy of solubility at 298 K were determined. Fusion heats of the acids were determined using differential thermal analysis. In accordance with obtained values the enthalpies, entropies and Gibbs energy of mixing were calculated. The compensating effect of mixing was observed for al solvents with carboxy group.
References: 

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