Phase transitions in multicomponent liquid systems: The key role of electrolytes

Ali, B M Jaffar and Jacob, Jaby and Kumar, A (1998) Phase transitions in multicomponent liquid systems: The key role of electrolytes. In: Pure and Applied Chemistry, 70 (03). pp. 591-597.

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Abstract

The light scattering measurements, that yield osmotic compressibility (chi(T)), are presented near and away from Special Critical Points in multicomponent liquid mixtures. A double critical point (DCP) is located in the system (3-methylpyridine + water + sodium bromide). A phase boundary is generated in the proximity of Critical Inflection Point (CIP) and it is explored in the system (ethannl + water + potassium carbonate). A Plait point is probed in the system (ethanol + water + sodium carbonate). The findings away from the DCP (i.e., for larger salt concentrations) suggest an interplay between two competing length scales. A recurring theme in these results is that the presence of electrolytes induces the Mean-Field (or classical) critical behaviour in the vicinity of a CIP, a Plait point and far away from a DCP. These observations lead to the inference of a possible structuring of the host liquid mixture around the ionic solute.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to International Union of Pure and Applied Chemistry.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Dec 2009 08:04
Last Modified:	19 Sep 2010 05:26
URI:	http://eprints.iisc.ernet.in/id/eprint/19043

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