
Computing a LiquidVapor 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, http://www.southalabama.edu/acs/memorial.html


Abstract 
This Mathcad document shows details involved in the calculation of the liquidvapor phase diagram for a binary system. It includes both the ideal and nonideal cases. The ideal case follows from Raoult's Law and the nonideal 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.


Keywords 

Audiences: 
UpperDivision Undergraduate 
Pedagogies: 
ComputerBased Learning 
Domains: 
Physical Chemistry 
Topics: 
Mathematics / Symbolic Mathematics, Phases / Phase Transitions / Diagrams, Thermodynamics 

Documents 

File Name  Description  Software Type  Software Version 
liq_vap.mcd 
Mathcad Computational Document 
Mathcad 

liq_vap.pdf 
ReadOnly 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.

