JCE Online Journal of Chemical Education
 | Subscriptions  | Software Orders  | Support  | Contributors  | Advertisers  | 

JCE Print
   Current Issue
 Previous Issues
 Supplements
 Search JCE Index

JCE Digital Library
   DigiDemos
 QBank
 SymMath
 WebWare

JCE Software
   Latest Releases
 Software & Video
 Downloads
 Support

Only@JCE Online
   JCE Online Store
 JCE HS CLIC
 JCE Discussion Forums
   Biographical Snapshots
 ChemEd Resource Shelf
 Featured Molecules
 Hal's Picks
 Project Chemlab
 Reviewed WWW Sites
 "Web-Ed" Articles

About JCE
   Features
 Publications
 Operations
 Outreach
 Contact Us


  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > October  >
Research: Science and Education
Thermodynamics of Mixing Real Gases
Simeen Sattar
Department of Chemistry, Bard College, Annandale-on-Hudson, NY 12504-5000
Cover
October 2000
Vol. 77 No. 10
p. 1361
Abstract
Although it is commonly omitted from undergraduate physical chemistry texts, the thermodynamics of mixing real gases can be approached in the same way as that of mixing ideal gases. This is done for mixtures of slightly imperfect gases, which are defined by a truncated virial equation of state Z = 1 + Bp/RT. An expression for the Gibbs energy of mixing is the fundamental result and, from this, expressions for excess entropy, enthalpy, and volume easily follow. Predicted variations in these excess thermodynamic functions with composition, temperature, and pressure are discussed in comparison with experimental data for binary systems that range from nearly to far from ideal. The excess second virial coefficient, which has both microscopic and macroscopic significance, is key to understanding slightly imperfect gas mixtures.
More Information
*  Citation
 Sattar, Simeen. J. Chem. Educ. 2000 77 1361.
*  Keywords
 Gases; Intermolecular Forces; Physical Chemistry; Thermodynamics
*  History
 Created:
Last Updated:		 September 22, 2000
April 15, 2005
<< Previous Article Table of Contents Next Article >>
  Home > JCE Print > Journal of Chemical Education > Issues > 2000 > October > Page 1361


Subscriptions
 Subscription Info
 Order Forms

JCE HS CLIC

Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
 JCE HS CLIC

Contributions Welcome
JCE welcomes your submission
 Contributors' Corner

Advertisers
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
 Recent Advertisers

Be An Ambassador
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.
 Outreach with JCE

Comments to
jceonline@chem.wisc.edu		 Copyright © Division of Chemical Education, Inc., American Chemical Society.
All rights reserved.