期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 130, 期 -, 页码 114-118出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2018.09.033
关键词
Solvophobic solvation; Solvents with the H-bond network; Urea; Tetramethylurea; Thermodynamics of solution
资金
- Russian Foundation for Basic Researches [18-03-00016-a]
Enthalpies of solution of urea (U) and tetramethylurea (TMU) in formamide (FA) and ethylene glycol (Eg) have been experimentally determined from (288 to 328) K. Standard enthalpies and heat capacities of solution of non-electrolytes have been computed and compared with those for aqueous solutions. Heat capacities of solution of U and TMU are rather small and positive for both non-aqueous solvents, whereas in cold water the Delta C-p(0) values for U and TMU reveal different signs. Our comparative analysis indicates that the behavior of both hydrophilic and hydrophobic species in water differs from that in the non-aqueous solvents with the three dimensional H-bond network, according to our experimental results formamide being a more water-like solvent than ethylene glycol. (C) 2018 Elsevier Ltd.
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