Viscosity of the binary gas mixtures argon-methane and argon-ammonia

Viscosities of the binary gas mixtures argon-methane and argon-ammonia have been measured by an oscillating-disc viscometer as functions of composition in the temperature range from −35 to 35°C. For the nonpolar-nonpolar system argon-methane, the agreement between the experimental and calculated values of mixture viscosity is fairly satisfactory. For the nonpolar-polar system argon-ammonia, the calculated values from the combination rules are lower than the experimental data. Attempts have been made to derive information on the unlike interactions from mixture viscosity data.