Computing a Liquid-Vapor Phase Diagram©
Sidney H. Young
**Sid Young died in 2004 after a long illness. He was a beloved teacher and a leader in the development and use of Mathcad as a tool to promote student learning in physical chemistry. A memorial to Dr. Young was established by the University of South Alabama ACS Student Affiliate,

This Mathcad document shows details involved in the calculation of the liquid-vapor phase diagram for a binary system. It includes both the ideal and non-ideal cases. The ideal case follows from Raoult's Law and the non-ideal case uses the van Laar equation to calculate the activity coefficient of each component. The activity coefficients are then used to generate the phase diagram. Students can use this document as a template to study different azeotrope liquid pairs, do the calculations for their own azeotrope phase diagram experiment or examine the activity coefficients of liquid pairs of interest. Student exercises for using this document must be provided by the instructor. A more detailed development of the ideas in this document can be found in the worksheet developed by F. Chen.
Audiences: Upper-Division Undergraduate
Pedagogies: Computer-Based Learning
Domains: Physical Chemistry
Topics: Mathematics / Symbolic Mathematics, Phases / Phase Transitions / Diagrams, Thermodynamics
File NameDescriptionSoftware TypeSoftware Version Mathcad Computational Document Mathcad
liq_vap.pdf Read-Only Document
Comments to: Theresa Julia Zielinski, SymMath Collection Curator
©Copyright Sidney Young, 1996. All rights reserved. You are welcome to use this document in your own classes but commercial use is not allowed without the permission of the author.