WOLFRAM|DEMONSTRATIONS PROJECT

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

​
pressure
101.325
option
isobaric VLE diagram
equilibrium curve
relative volatility
K-value
fugacity coefficient
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
K
-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).
VLE data is computed using the following formula (the gamma-phi equation):
y
i
P
ϕ
i
=
g
i
x
i
sat
P
i
where
y
i
and
x
i
are the vapor and liquid mole fractions of component
i
,
P
is the total pressure,
sat
P
i
is the saturation vapor pressure of component
i
,
ϕ
i
and
g
i
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.