The P.V.T.-behavior of diatomic substances in their gaseous and liquid states
Article first published online: 17 JUN 2004
Copyright © 1961 American Institute of Chemical Engineers
Volume 7, Issue 2, pages 185–189, June 1961
How to Cite
Byrne, R. and Thodos, G. (1961), The P.V.T.-behavior of diatomic substances in their gaseous and liquid states. AIChE J., 7: 185–189. doi: 10.1002/aic.690070204
- Issue published online: 17 JUN 2004
- Article first published online: 17 JUN 2004
- Manuscript Accepted: 14 JUN 1960
- Manuscript Revised: 9 JUN 1960
- Manuscript Received: 16 JUN 1959
The critical compressibility factor has been used as a criterion for the correlation of the P.V.T.-behavior in the gaseous and liquid states for the diatomic gases, nitrogen, oxygen, carbon monoxide, nitric oxide, chlorine, and hydrogen chloride. Reduced densities for these substances have been calculated from available literature data. These are presented as functions of reduced temperature and reduced pressure to produce extensive density correlations for nitrogen, oxygen, and carbon monoxide. These correlations exhibit similar behavior as expected from their similar critical compressibility factors.
The validity of the critical compressibility factor as a correlating parameter has been verified by the favorable comparison of the P.V.T.-behavior of substances other than diatomic gases including argon, krypton, xenon, and methane. These results indicate that the P.V.T.-behavior of substances having critical compressibility factors of approximately 0.291 can be predicted from the reduced state correlation developed in this study as long as polarity effects are absent.