ln f = [lnρ + Ares/RT + P/ρRT]P,T + ln(RT) - 1,
where f is fugacity, Ares is residual Helmholtz energy, ρ is 'molar' density (n/V) and P, T, R are pressure, temperature and the universal gas constant, respectively.
Dekker, T.J. Finding a Zero by Means of Successive Linear Interpolation. In: Constructive Aspects of the Fundamental Theorem of Algebra. Ed. B. Dejon and P. Henrici. Wiley-Interscience, 1969. Pitzer, K.S. and Sterner, S.M. (1994). Equations of state valid continuously from zero to extreme pressures for H2O and CO2. Journal of Chemical Physics. 101: 3111-3116. Shampine, L.F. and Watts, H.A.(1970). FZERO, A Root-solving Code. Report SC-TM-70-631, Sandia Laboratories.
Sterner, S.M. and Pitzer, K.S. (1994). An equation of state for carbon dioxide valid from zero to extreme pressures. Contributions to Mineralogy and Petrology. 117: 362-374.
We gratefully acknowledge the National Science Foundation
University of Minnesota for support of the research and information
described on these pages.
The views and opinions expressed in this page are strictly
those of the page author.
The contents of this page have been neither reviewed nor approved by the University of Minnesota.