Virial Coefficients for Unlike Interactions

Abstract

The nonidealities have been measured at 50°C for nitromethane-acetone, nitromethane-argon, and nitromethane-benzene vapour mixtures. Comparisons of the calculated second virial coefficients for the unlike interactions with estimations from intermolecular potential combining rules fail badly for the nitromethane-acetone mixture and the nitromethane-benzene mixture, but agree within 15% for the nitromethane-argon mixture.