High Pressure Vapor-Liquid Equilibrium Data of a Binary Mixture of Chloroform and Acetone

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Consider a binary mixture composed of chloroform and acetone. This mixture exhibits a negative azeotrope. This Demonstration computes and plots the isobaric vapor-liquid equilibrium (VLE) diagram, the equilibrium curve, the relative volatility, the -value, and the gas phase fugacity coefficients for user-specified values of the pressure. This Demonstration takes into account the deviation from ideal behavior in the gas phase by including gas phase fugacity coefficients. Thus high-pressure VLE data can be obtained. This Demonstration does not allow for the Poynting Factor Correction (or POY).

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VLE data is computed using the following formula (the gamma-phi equation): where and are the vapor and liquid mole fractions of component , is the total pressure, is the saturation vapor pressure of component , and are the vapor-phase fugacity coefficient and the liquid-phase activity coefficient determined using the Soave–Redlich–Kwong equation of state and the Wilson model, respectively.

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Contributed by: Housam Binous (March 2011)
Open content licensed under CC BY-NC-SA


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