Second virial coefficient for a mixture of nonspherical molecules of arbitrary symmetry
Abstract
The mixture and interaction second virial coefficients of a binary gas mixture of nonspherical molecules of arbitrary symmetry have been calculated for a set of unlike force parameters which is obtained from the force parameters for like interactions by using empirical combination rules. In the calculation molecular anisotropy of very general type has been accounted. The relative contribution of each branch of interactions has been evaluated as a function of temperature. The theoretical values of interaction second virial coefficient have been compared with the experimental data of N_{2}+A, N_{2}+He, N_{2}+H_{2}, N_{2}+O_{2}, N_{2}+C_{2}H_{4}, N_{2}+C_{2}H_{6}, CO_{2}+A, CO_{2}+H_{2}, CO_{2}+N_{2}, CO_{2}+O_{2}, CO_{2}+CO, CO_{2}+C_{2}H_{4}, CO_{2}+C_{2}H_{6}, O_{2}+A and H_{2}+CO. The agreement between theory and experiment is satisfactory for all the systems. Numerical estimations of the mixture second virial coefficients as a function of temperature and composition are given for the systems CO_{2}+A, CO_{2}+H_{2}, CO_{2}+N_{2}, CO_{2}+O_{2} and CO_{2}+CO.
 Publication:

Pramana
 Pub Date:
 June 1978
 DOI:
 10.1007/BF02879552
 Bibcode:
 1978Prama..10..639S
 Keywords:

 Binary Mixtures;
 Gas Mixtures;
 Molecular Interactions;
 Perturbation Theory;
 Polyatomic Molecules;
 Virial Theorem;
 Anisotropic Media;
 Kinetic Theory;
 Potential Energy;
 Statistical Mechanics;
 Atomic and Molecular Physics;
 Mixture second virial coefficients;
 electric multipole moments;
 perturbation method;
 nonpolar mixtures