Mixing conformal solution

Another possibility, however, was that conformational differences in the rings were responsible for most of the spectral differences. The ring conformation in the room-temperature solid is lel2ob [40], One might expect either the lei or ob conformation to be energetically favored and ascribe the mixed conformation to crystal packing forces. A more symmetric lel3 or ob3 conformation in solution could then be responsible for the differences in the CD spectra. 

Mansoori and co-workers also tested the conformal solution mixing rules with other equations of state on systems containing a high molecular weight liquid in a supercritical fluid mixture. 

They showed that the Peng-Robinson equation of state using mixing rules based on conformal solution theory can predict the fluid phase equilibrium of high molecular weight liquids in supercritical fluids more accurately than others (18.19). 

It is obvious from the foregoing discussion that the enthalpies of mixing for charge-unsymmetrical systems do not follow the simple conformal solution theory. When the anion in a strontium halide-alkali metal halide mixture from chloride to bromide and from bromide to iodide is changed, the enthalpy of mixing is decreasing. For all systems, the enthalpy interaction parameter, k, is a linear function of 512 with the usual exception for lithium-containing systems. Two important features of the k versus 512 plot should be emphasized ... 

A general method of predicting the effective molecular diameters and the thermodynamic properties for fluid mix-tures based on the hard-sphere expansion conformal solution theory is developed. The method of Verlet and Weis produces effective hard-sphere diameters for use with this method for those fluids whose intermolecular potentials are known. For fluids with unknown potentials, a new method has been developed for obtaining the effective diameters from isochoric behavior of pure fluids. These methods have been extended to polar fluids by adding a new polar excess function, to account for polar contributions in a mixture. A new set of pseudo parameters has been developed for this purpose. The calculation of thermodynamic properties for several fluid mixtures including CH —C02 has been carried out successfully. 

Three-Parameter, Corresponding-States Conformal Solution Mixing Rules for Mixtures... 

The modified VDW one-fluid mixing rules for ( X> Cx and Sx in Equations 6, 7, and 16 were used to determine the ability of this formulation of the conformal solution model for predicting mixture behavior. The following relations were used for cry, ey, and Sy where i /,... 

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