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Thermodynamics of hydrothermal systems at elevated temperatures and pressures
Abstract
Sufficient thermodynamic data are available to permit calculation of equilibrium constants for a large number of hydrothermal reactions. Where the data are incomplete, the calculations involve entropy estimates, application of average heat capacities, and/or assumptions concerning the temperature dependence of thermodynamic variables and the relative importance of electrostatic and non-electrostatic interaction among the species. Temperature stoichiometric activity coefficients for individual ions can be calculated using deviation functions computed from osmotic coefficients for concentrated NaCl solutions. The results of such calculations, together with computed heat capacities, enthalpies, entropies, and equilibrium constants for many hydrothermal species and reactions are presented in tables and diagrams.
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Cited by
Nesbitt, H. W., & Young, G. M. (1984) · Geochimica et Cosmochimica Acta · doi:10.1016/0016-7037(84)90408-3 · Cited by 2,368
(1991) · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · Cited by 1,743
Europium redox equilibria in aqueous solution
Sverjensky, D. A. (1984) · Earth and Planetary Science Letters · doi:10.1016/0012-821x(84)90039-6 · Cited by 902
Prediction of the thermodynamic properties of aqueous metal complexes to 1000°C and 5 kb
Sverjensky, D. A., Shock, E. L., & Helgeson, H. C. (1997) · Geochimica et Cosmochimica Acta · doi:10.1016/s0016-7037(97)00009-4 · Cited by 788
Self-citationKim, S.-T., O’Neil, J. R., Hillaire-Marcel, C., & Mucci, A. (2007) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2007.04.019 · Cited by 532
Metadata
- Authors
- Helgeson, H. C.
- Venue
- American Journal of Science
- Publisher
- American Journal of Science (AJS)
- Published
- 1969-09-01
- Volume
- 267
- Issue
- 7
- Pages
- 729-804
- ISSN
- 0002-9599 (ISSN-L)
- OpenAlex
- W2078288112
- Cited by
- 1,547
- References
- 0
- FWCI
- 18.47
- Type
- journal article
- Language
- en
- Open access
- closed
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