Determination of interaction second virial coefficients; He-CO2 system



We have obtained values for interaction second viral coefficients of the helium-carbon dioxide system in the range 230 ⩽ T/K ⩽ 300. Our experimental technique is essentially the Burnett mixing method described by Hall and Eubank (1973, 1974). We have modified the analysis to account for higher-order effects and to detect significant systematic errors. We also report virial coefficients for the pure components: helium in the range 100 ⩽ T/K ⩽ 300 and carbon dioxide at 300 K.