Measurement of activity coefficients in highly dilute solutions part I

Space predictor for infinite dilution activity coefficients

“…et al, 1982. The results are compared with the UNIFAC model (Gmehling et al, 1982) in Table VII. A set of y" data not used in the development of either model, for a diverse group of 58 organic systems at 25 °C, were used to evaluate the predictive errors of the models (Hradetzky et al, 1990;Landau et al" 1991). Since no parameters are directly available for dioxane, we used two CH20 groups and two CH2 groups with no cyclic correction.…”

Liquid/Gas Partition Coefficients of Aroma Compounds and n-Alkanes between Aqueous Ethanol Mixtures and Nitrogen

“…Combining eqs 4 and 5 with the definition of the partition coefficient gives Kl/g = c,L/ClG = / 0/(7^ ^°) (6) where is the gas-phase fugacity coefficient. If the behavior in the gas phase is assumed to be nearly ideal, then Kl/g = c,L/cG = RT/(yiLVhP°) (7) It should be noted that the concentration ratio definition of the partition coefficient is the same using either mass or molar concentration ratios.…”