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Bulletin of the Polish Academy of Sciences. Chemistry

Tytuł artykułu

Effects of hydrophobic and hydrophilic hydration on the compressibility, volume and viscosity of mixtures of water with ß-picoline

Autorzy Marczak, W.  Ernst, S. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN The speed of ultrasound in and the density of mixtures of water with ,ß-picoline were measured in the whole concentration range and within the temperature limits 293 = 298 K. The viscosities of those mixtures were measured at 293 K. The molar compressibility, molar volume and the corresponding excess and partial functions as well as the coefficients of the adiabatic compressibility and the excess activation energy of viscous flow were calculated. The results were discussed in terms of hydrophobic and hydrophilic molecular interactions. The hydrophobic hydration becomes evident in the thermodynamic properties of dilute aqueous solutions in that most probably labile semiclathrate structures, resembling cubic II solid clathrates (symmetry group Fd3m) but with guest molecules hydrogenbonded to the water host lattice, arise. With increasing concentration of the organic component the shortage of water leads to a gradual decay of the water polyhedra around the picoline molecules and hydrophilic hydration becomes predominant.
Słowa kluczowe
EN water   ß-picoline   compressibility   molar volume   viscosity   hydrophobic effect   hydration  
Wydawca Centrum Upowszechniania Nauki PAN
Czasopismo Bulletin of the Polish Academy of Sciences. Chemistry
Rocznik 1998
Tom Vol. 46, No. 4
Strony 375--395
Opis fizyczny Bibliogr. 30 poz.
autor Marczak, W.
autor Ernst, S.
  • Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice (Instytut Chemii, Uniwersytet Śląski)
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-article-BPP1-0002-0090