Chapter 2. Equations of State

  1. Bruce A. Finlayson

Published Online: 8 FEB 2006

DOI: 10.1002/0471776688.ch2

Introduction to Chemical Engineering Computing

Introduction to Chemical Engineering Computing

How to Cite

Finlayson, B. A. (2006) Equations of State, in Introduction to Chemical Engineering Computing, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471776688.ch2

Author Information

  1. University of Washington, Seattle, Washington, USA

Publication History

  1. Published Online: 8 FEB 2006
  2. Published Print: 27 FEB 2006

ISBN Information

Print ISBN: 9780471740629

Online ISBN: 9780471776680



  • equation of state;
  • Redlich-Kwong;
  • Redlich-Kwong-Soave;
  • Excel commands ‘Goal Seek’ and ‘Solver’;
  • MATLAB commands ‘fzero’ and ‘fsolve’;
  • Aspen Plus property analysis


Excel, MATLAB, and Aspen Plus are demonstrated to solve a cubic equation of state to find the specific volume of either a pure component or mixture at a given temperature and pressure. The equations are developed in general, and then the computer programs are used to solve sample problems.