A comprehensive equation of state has been developed for the system NaCl-H2O at high temperatures and pressures. The equation consists of a reference part and a perturbation contribution. The reference part represents the properties of a mixture of hard-sphere ion pairs and dipolar solvent molecules. The perturbation part arises from all other interactions and comprises a virial-type expansion truncated after the fifth virial coefficient. Mixing rules for the perturbation part are guided by the composition dependence of virial coefficients and contain empirically determined terms for unlike-molecule interactions. The equation has been fitted to extensive experimental data in the temperature range 573-773 K and to more limited data above 773 K. In both temperature regions, the equation reproduces vapor-liquid equilibria, volumetric properties, and solubilities of solid NaCl essentially within experimental uncertainty. It is valid at temperatures between 573 K and ca. 1200 K and pressures up to 5 kbar.
%0 Journal Article
%1 Anderko1993
%A Anderko, Andrzej
%A Pitzer, Kenneth S.
%D 1993
%J Geochimica et Cosmochimica Acta
%K 1993 Helmholtz NaCl density water
%N 8
%P 1657 - 1680
%R 10.1016/0016-7037(93)90105-6
%T Equation-of-state representation of phase equilibria and volumetric properties of the system NaCl-H2O above 573 K
%U http://dx.doi.org/10.1016/0016-7037(93)90105-6
%V 57
%X A comprehensive equation of state has been developed for the system NaCl-H2O at high temperatures and pressures. The equation consists of a reference part and a perturbation contribution. The reference part represents the properties of a mixture of hard-sphere ion pairs and dipolar solvent molecules. The perturbation part arises from all other interactions and comprises a virial-type expansion truncated after the fifth virial coefficient. Mixing rules for the perturbation part are guided by the composition dependence of virial coefficients and contain empirically determined terms for unlike-molecule interactions. The equation has been fitted to extensive experimental data in the temperature range 573-773 K and to more limited data above 773 K. In both temperature regions, the equation reproduces vapor-liquid equilibria, volumetric properties, and solubilities of solid NaCl essentially within experimental uncertainty. It is valid at temperatures between 573 K and ca. 1200 K and pressures up to 5 kbar.
@article{Anderko1993,
abstract = {A comprehensive equation of state has been developed for the system NaCl-H2O at high temperatures and pressures. The equation consists of a reference part and a perturbation contribution. The reference part represents the properties of a mixture of hard-sphere ion pairs and dipolar solvent molecules. The perturbation part arises from all other interactions and comprises a virial-type expansion truncated after the fifth virial coefficient. Mixing rules for the perturbation part are guided by the composition dependence of virial coefficients and contain empirically determined terms for unlike-molecule interactions. The equation has been fitted to extensive experimental data in the temperature range 573-773 K and to more limited data above 773 K. In both temperature regions, the equation reproduces vapor-liquid equilibria, volumetric properties, and solubilities of solid NaCl essentially within experimental uncertainty. It is valid at temperatures between 573 K and ca. 1200 K and pressures up to 5 kbar.},
added-at = {2011-01-19T18:05:19.000+0100},
author = {Anderko, Andrzej and Pitzer, Kenneth S.},
biburl = {https://www.bibsonomy.org/bibtex/292348ad9b7ef5dff94932b32e86f8d57/thorade},
doi = {10.1016/0016-7037(93)90105-6},
interhash = {f162792cc4c76716bbc64210703eca32},
intrahash = {92348ad9b7ef5dff94932b32e86f8d57},
issn = {0016-7037},
journal = {Geochimica et Cosmochimica Acta},
keywords = {1993 Helmholtz NaCl density water},
number = 8,
pages = {1657 - 1680},
timestamp = {2012-11-02T19:12:38.000+0100},
title = {Equation-of-state representation of phase equilibria and volumetric properties of the system NaCl-H2O above 573 K},
url = {http://dx.doi.org/10.1016/0016-7037(93)90105-6},
volume = 57,
year = 1993
}