Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Theoretical prediction of thermodynamic properties of aqueous electrolytes at high pressures and temperatures. III. Equation of state for aqueous species at infinite dilution

Journal Article · · Am. J. Sci.; (United States)
DOI:https://doi.org/10.2475/ajs.276.2.97· OSTI ID:7348324
;
Calculation of the electrostatic properties of H/sub 2/O as a function of solvent density permits controlled extrapolation to infinite dilution of apparent molal volumes of aqueous electrolytes at high pressures and temperatures. Extrapolations of this kind were carried out for 19 electrolytes with the aid of the molal analog of the Redlich--Meyer equation and published density measurements at 20 bars and temperatures from 25 to 200/sup 0/C.Data currently available permit calculation of the standard partial molal properties of electrolytes and ionic species at temperatures and pressures to 600/sup 0/C and 5 kb. The requisitive coefficients can be obtained by regression of isobaric low-temperature data and/or estimated from correlation algorithms. High pressure/temperature values of partial molal volumes and partial molal compressibilities are given in tables and diagrams to facilitate geologic application of the equation of state, which can be used to compute the relative stabilities of minerals in hydrothermal systems.
Research Organization:
Univ. of California, Berkeley
OSTI ID:
7348324
Journal Information:
Am. J. Sci.; (United States), Journal Name: Am. J. Sci.; (United States) Vol. 276:2; ISSN AJSCA
Country of Publication:
United States
Language:
English

Similar Records

Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: aqueous tracer diffusion coefficients of ions to 1000/sup 0/C and 5 kb
Journal Article · Thu Dec 31 23:00:00 EST 1987 · Geochim. Cosmochim. Acta; (United States) · OSTI ID:7222746
Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Standard partial molal properties of inorganic neutral species
Journal Article · Fri Sep 01 00:00:00 EDT 1989 · Geochimica et Cosmochimica Acta; (USA) · OSTI ID:7170903
Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Correlation algorithms for ionic species and equation of state predictions to 5 kb and 1000 degree C
Journal Article · Mon Aug 01 00:00:00 EDT 1988 · Geochimica et Cosmochimica Acta; (USA) · OSTI ID:7164094

Related Subjects

15 GEOTHERMAL ENERGY
152001* -- Geothermal Data & Theory-- Properties of Aqueous Solutions
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
APPARENT MOLAL VOLUME
AQUEOUS SOLUTIONS
DIAGRAMS
DISPERSIONS
ELECTROLYTES
EQUATIONS
EQUATIONS OF STATE
GEOTHERMAL SYSTEMS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROTHERMAL SYSTEMS
INFORMATION
MINERALS
MIXTURES
PARTIAL MOLAL VOLUME
PHYSICAL PROPERTIES
SOLUTIONS
STABILITY
TABLES
THERMODYNAMIC PROPERTIES