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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > November  >
Research: Science and Education
The Influence of Distillation Conditions on the Azeotropic Composition
Jaime Wisniak
Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Cover
November 1998
Vol. 75 No. 11
p. 1486
Abstract
The thermodynamic conditions that determine the presence of an azeotrope in a binary solution are developed and analyzed together with the criteria that define if the azeotrope has a maximum or minimum boiling point at constant pressure. It is shown that using simple models for describing vapor-liquid equilibria and vapor pressure data of the pure components it is possible to determine rather accurately how the azeotropic point will shift if the distillation is carried out at a different pressure or temperature. Examples are given on the use of the proposed method; these can be used as classroom material.
More Information
*  Citation
 Wisniak, Jaime. J. Chem. Educ. 1998 75 1486.
*  Keywords
 thermodynamics, phase transitions, diagrams, physical chem
*  History
 Created:
Last Updated:		 June 18, 1999
June 24, 2005
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