By Giles M. Marion

ISBN-10: 3540756787

ISBN-13: 9783540756781

This ebook explicitly investigates problems with astrobiological relevance within the context of chilly aqueous planetary geochemistry.

At the middle of the technical chapters is the FREZCHEM version, at first constructed over decades through one of many authors to quantify aqueous electrolyte houses and chemical thermodynamics at subzero temperatures. FREZCHEM, of common relevance to biogeochemists and geochemical modelers, chilly planetary scientists, physicochemists and chemical engineers, is thus utilized to the exploration of biogeochemical purposes to sunlight platforms our bodies commonly, and to speculations in regards to the limits for all times in chilly environments in particular.

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Additional info for Cold Aqueous Planetary Geochemistry with FREZCHEM: From Modeling to the Search for Life at the Limits

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3 Chemistries and Their Temperature and Pressure Dependence 29 Fig. 3. Freezing point depression of a pure ice/water system as a function of pressure. Reprinted from Marion et al. 356 cm3 mol−1 for the Chen et al. (1977) data and our model, respectively. 45 K) along the pressure melting curve of ice/water (Wagner et al. 1994) (Fig. 3). 565 cm3 mol−1 at 1000 and 2000 bars of pressure. The pressure melting curve for ice/water (Wagner et al. 1994) was used in deriving the molar volume of water at subzero temperatures (Eq.

356 cm3 mol−1 for the Chen et al. (1977) data and our model, respectively. 45 K) along the pressure melting curve of ice/water (Wagner et al. 1994) (Fig. 3). 565 cm3 mol−1 at 1000 and 2000 bars of pressure. The pressure melting curve for ice/water (Wagner et al. 1994) was used in deriving the molar volume of water at subzero temperatures (Eq. 16) and the compressibility of ice (Eq. 19), so naturally our model fits this database very well (Fig. 3). 2 summarizes the chemistries that lead to the precipitation of solid phases.

3 Chemistries and Their Temperature and Pressure Dependence 35 Fig. 6. Molar volumes of ions at infinite dilution as a function of temperature. Symbols are from Millero (1983). Lines are model estimates Fig. 7. Isothermal compressibility of ions at infinite dilution as a function of temperature. Symbols are from Millero (1983). Lines are model estimates as functions of temperatures (Millero 1983). Equation parameters are given in Appendix B. Use of these relations at subzero temperatures is based on extrapolations.

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Cold Aqueous Planetary Geochemistry with FREZCHEM: From Modeling to the Search for Life at the Limits by Giles M. Marion


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