Excess and Interaction Second Virial Coefficients for Ten Binary Gaseous Systems Containing SF6

1982 ◽  
Vol 86 (7) ◽  
pp. 626-627 ◽  
Author(s):  
M. L. Martin ◽  
R. D. Trengove ◽  
K. R. Harris ◽  
Peter J. Dunlop
Keyword(s):  
Virial Coefficients ◽  
Second Virial Coefficients ◽  
Binary Gaseous Systems

Excess second virial coefficients for some dilute binary gas mixtures

1982 ◽  
Vol 35 (8) ◽  
pp. 1525 ◽  
Author(s):  
ML Martin ◽  
RD Trengove ◽  
KR Harris ◽  
PJ Dunlop
Keyword(s):  
Excellent Agreement ◽  
Virial Coefficients ◽  
Gas Mixtures ◽  
Excess Molar Enthalpies ◽  
Second Virial Coefficients ◽  
Temperature Range ◽  
Enthalpies Of Mixing ◽  
Binary Gaseous Systems

Excess and interaction second virial coefficients have been measured in the temperature range 290-320 K for 20 binary gaseous systems. Several of these systems have previously been studied by Brewer. The present values are in excellent agreement with his results. The excess virial coefficients have been used to calculate excess molar enthalpies of mixing at 300 K.

The Bender Equation of State and Virial Coefficients

2000 ◽  
Vol 65 (9) ◽  
pp. 1464-1470 ◽  
Author(s):  
Anatol Malijevský ◽  
Tomáš Hujo
Keyword(s):  
Equation Of State ◽  
Virial Coefficient ◽  
Virial Coefficients ◽  
Low Density ◽  
Second Virial Coefficients ◽  
The Third ◽  
Temperature Dependences ◽  
Experimental Values

The second and third virial coefficients calculated from the Bender equation of state (BEOS) are tested against experimental virial coefficient data. It is shown that the temperature dependences of the second and third virial coefficients as predicted by the BEOS are sufficiently accurate. We conclude that experimental second virial coefficients should be used to determine independently five of twenty constants of the Bender equation. This would improve the performance of the equation in a region of low-density gas, and also suppress correlations among the BEOS constants, which is even more important. The third virial coefficients cannot be used for the same purpose because of large uncertainties in their experimental values.

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