# High-Pressure Vapor-Liquid Equilibrium Computations Using the Hayden-O'Connell Method and Wilson Model

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Consider a binary mixture of -butanol and -butyl acetate. This Demonstration computes vapor-liquid equilibrium data for this mixture at various pressures. We use the Wilson model for the prediction of liquid-phase activity coefficients and the Hayden–O'Connell method to compute the gas-phase fugacity coefficients.

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Contributed by: Housam Binous and Eid Al-Mutairi (March 2011)

Open content licensed under CC BY-NC-SA

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Reference

[1] J. G. Hayden and J. P. O'Connell, "A Generalized Method for Predicting Second Virial Coefficients," *Industrial and Engineering Chemistry Process Design and Development, *14(3), 1975, pp. 209–216.

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