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Compressibility of aqueous solutions of nonelectrolytes: an equilibrium model
Jacek Gliński1, Andrzej Burakowski
1Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland. glin@wchuwr.pl
Abstract:
In this paper the parabolic-shaped dependences of compressibility kappa(S) of a nonelectrolyte in water solvent on concentration are explained and described semiquantitatively in terms of hydrate formation equilibrium reaction. It was demonstrated that only two fitted parameters, the hydration number n(h) and the formation constant of the hydrate K, are sufficient to reproduce satisfactorily the experimental data, in particular the characteristic minimums of kappa(S) versus composition observed at low contents of solutes.
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