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Two equations of (γ/χ)χ=0 ——a modified Kikic-Renon equation and a Valentin-Guiochon equation——have been studied. Values of γ_1~∞ and (dlnγ_1/dχ_1)χ=0 by these two equations for 29 binary systems have been calculated from GLC data, the parameters in some models of excess Gibbs free energy evaluated and the vapor-liquid equilibrium date predicted. The results are satisfactory.
Two equations of (γ / χ) χ = 0 - a modified Kikic-Renon equation and a Valentin-Guiochon equation - have been studied. Values of γ_1 ~ ∞ and (dlnγ_1 / dx_1) χ = 0 by these two equations for 29 binary systems have been calculated from GLC data, the parameters in some models of excess Gibbs free energy evaluated and the vapor-liquid equilibrium date predicted.