Effect of electrolytes on the critical temperature of separation and physicochemical properties of binary liquid systems

The effect ions have on the equilibrium and kinetic properties of solutions near the critical temperature of separation is studied. From an analysis of the experimental data obtained in the work and from the literature it is shown that adding ions to a solution increases the correlation length of th...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2014-09, Vol.88 (9), p.1519-1526
Main Authors: Alekhin, A. D., Ostapchuk, Yu. L., Rudnikov, E. G., Voiteshenko, A. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
Physical Chemistry of Solutions
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Summary:The effect ions have on the equilibrium and kinetic properties of solutions near the critical temperature of separation is studied. From an analysis of the experimental data obtained in the work and from the literature it is shown that adding ions to a solution increases the correlation length of the system and changes the magnitude of the fluctuation part of the thermodynamic potential and the forces of interaction among the order parameter fluctuations in the vicinity of the critical point. This changes the parameters of the extended equation of state, increases the viscosity of substances, and lowers the coefficient of volume expansion of the system.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024414090027