Bulg. J. Phys. vol.25 no.3-4 (1998), pp. 134-139



Viscosity and Second Virial Coefficient of CCl4 and CCl4-CH4 Mixture

L. Zarkova, I. Petkov, P. Pirgov
Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzafigradsko Chaussee Blvd, 1784 Sofia, Bulgaria
Abstract. Potential parameters of an isotropic (n-6) potential with temperature depended equilibrium distance rmeff and potential well depth εeff are justified by a simultaneous reproducing of the measured second virial coefficient B and viscosity η of the pure CCl4 and interaction second virial coefficient B12 of the mixture CCl4-CH4. The potential parameters of the ground state and the enlargement of the first excited level were justified by a minimization of the squared sum of deviations between the experiment and the model calculations. The temperature dependency of the equilibrium distance does not depend on the experimental data and was defined by means of the vibrational partition function.

Full-text: PDF

go back