ISSN:
1572-8943
Keywords:
enthalpy of mixing
;
hydrophobic hydration
;
isopropyl alcohol
;
supercooling temperature
;
tetrahydrofuran
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Supercooling temperatures and enthalpies of mixing with some solvents have been examined for two kinds of solutions subjected to different thermal treatments (solutions I and II) of tetrahydrofuran (THF), isopropyl alcohol (2-PrOH), and ethyleneglycol butylether (BE), and ethyleneglycol isobutylether (i-BE) in order to observe more directly the structural organization of water molecules around a nonpolar molecule in an aqueous solution. For THF and 2-PrOH solutions, supercooling temperatures of solution I were found to be 2–3 degrees higher than those of solution II, and differences ΔHI-ΔHII were found to be about 3 kJ mol−1. It has been concluded that these results directly reflect the difference in the stability of hydrogen-bonded water networks in an aqueous solution.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01996739
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