THERMAL CONDUCTIVITY OF MIXTURES OF METHANE WITH CARBON DIOXIDE.

This study is an addendum to two previous papers which contained data on the thermal conductivity of the systems H//2-N//2 and N//2-CH//4. The present system is CH//4-CO//2, thus forming a natural progression in the complexity of the molecular structure of the set of binary systems under investigation. The system chosen for study is still characterized by nearly spherical intermolecular force potentials. The results extrapolated to zero density show excellent agreement with the Monchick-Pereira-Mason theory and continue to demonstrate that the inelastic-collision term is small (approximately 1%), thus asserting that the Hirschfelder-Eucken approximation is acceptable. At higher densities, the version of the Thorne-Enskog theory due to E. A. Mason et al. gives a systematic deviation of only minus 2% over the whole composition range.