There has recently been a
revival of interest in theories of liquid mixtures based on analytic equations of
state for pure fluids. We have shown that the method used to determine the
parameters of the pure-liquid equation of state has a significant effect on the
excess thermodynamic properties obtained from such theories.
Excess volumes of the
binary mixtures, benzene + benzonitrile, benzene+ diethyl ketone and toluene+diethyl ketone, were determined at 303.15 K. The VE
data and HE data of the mixtures reported in the literature were
analysed in the light of both the original and modified forms of the Flory theory. The analysis showed that the modified Flory theory correctly predicts the sign of the excess
functions over the whole range of composition when the single interaction
parameter of the theory is treated as an energy parameter.
Excess thermodynamic properties of chainlike mixtures. II. Self-associating systems: predictions from soft-SAFT and molecular simulation
