The Viscosity of Gas Mixtures

Abstract

The viscosity of binary mixtures over the complete range of concentration has been measured in the case of He-A, He-N2, He-CO2 and H2-A, H2-N2, H2-CO2. All the measurements were made at 18°C and 70 cm of mercury pressure by a modified form of Rankine viscometer. The results are in very good agreement with the values calculated from Chapman's theory. Values for the first approximation to the diffusion coefficient (D12)1 are obtained from the results, and these are in approximate agreement with measured values where the letter are available.