par Mathot, Victor 
Référence Il Nuovo cimento, 9, 1 Supplement, page (356-357)
Publication Publié, 1958-03
Référence Il Nuovo cimento, 9, 1 Supplement, page (356-357)
Publication Publié, 1958-03
Article révisé par les pairs
| Résumé : | Vapor pressure and volume changes on mixing of the system argon-methane have been measured at 86.74 °K (triple point of trifluoro-chloromethane) by a technique essentially similar to that used for the carbon monoxide-methane system (Trans. Far. Soc., 52, 1488 (1956)). Heats of mixing and volume changes on mixing have been directly measured at slightly above 90.7 °K by the technique described by Jeener (Rev. Sci. Instr., 28, 263 (1957)). Excess properties have been worked out taking account for non-ideality of both liquid and vapor phases and compared to the prediction of the average potential theory developed by Prigogine and coworkers (see The Molecular Theory of Solutions, (Amsterdam 1957)) Table I gives [Figure not available: see fulltext.] the main results. There is qualitative agreement between column 3 and 4 (right sign of the excess functions) though the theoretical expressions appear 2 to 3 times larger than the experimental ones. This is presumably to be ascribed to the relatively large value of ρ{variant}=r 22 * )/r 11 (about 12%) whose influence appears to be overestimated in the average potential theory. © 1958 Società Italiana di Fisica. |
