Exploration of a quadruple critical point in a quaternary liquid mixture

Narayanan, T and Kumar, A and Venkatachalam, S and Jacob, J and Prafulla, BV (1995) Exploration of a quadruple critical point in a quaternary liquid mixture. In: The Journal of Chemical Physics, 102 (24). pp. 9653-9658.

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Abstract

We report the preliminary findings concerning the nature of a quadruple critical point that evolves when two independent double critical points merge in a thermodynamic field space. This special critical point is realized in a quasibinary mixture of 3-methylpyridine, water, heavy water, and KI. The critical behavior of osmotic susceptibility was deduced from the scattered intensity measurements at 90°. Our results suggest that the nature of a quadruple critical point is similar to that of a normal double critical point. In addition, we find that the significance of the leading correction-to-scaling term is markedly increased as a result of the presence of the salt (KI) in the system.

Item Type:	Journal Article
Publication:	The Journal of Chemical Physics
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	27 Mar 2007
Last Modified:	19 Sep 2010 04:35
URI:	http://eprints.iisc.ac.in/id/eprint/9892

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