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  • 1985-1989  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Calculation of the thermodynamic properties of aqueous electrolytes to 1000.degree.C and 5000 bar from a semicontinuum model for ion hydration (1989)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 4941-4951 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100349a053
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Near-critical NaCl-H2O: An equation of state and discussion of anomalous properties (1988)
    Springer
    International journal of thermophysics 9 (1988), S. 635-648 
    Details
    ISSN: 1572-9567
    Keywords: coexistence surface ; critical region ; mixtures (binary) ; sodium chloride ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The system NaCl-H2O near the critical point of pure water shows not only the remarkable properties of any two-component system near the critical point of one component but also an anomalous curvature of the T-x and P-x projections of the critical line in the range below mole fraction 0.0005. An equation of state is presented which is based on the Haar-Gallagher-Kell equation for pure water with a few terms involving the mole fraction of NaCl together with the temperature and density. Parameters in this equation were selected which yield a good representation of the entire vapor-liquid coexistence surface from 250 to 600°C and from the three-phase pressure to the critical pressure (or to the vapor pressure of pure water below its T c). Derivatives of this equation yield densities, enthalpies, and heat capacities which are compared with experimental data. Also, the properties calculated for the vapor near the three-phase line are compared with those predicted by the successive hydration model previously developed for NaCl in steam in equilibrium with solid NaCl. Other related topics are discussed, including the anomalous features noted above.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503232
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Calculation of the ionization constant of H2O to 2,273 K and 500 MPa (1989)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 35 (1989), S. 1631-1638 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Calculations of the ionization constant of H2O are presented for densities ranging from those of subcritical water to those of supercritical steam. A recently-proposed semicontinuum model is used to calculate the standard-state hydration properties for the ions, H3O+, and OH- (Tanger and Pitzer, 1989). Calculated ionization constants are in good agreement with reported measurements at pressures from vapor-liquid saturation to 500 MPa and temperatures from 273 to 1,073 K. These measurements cover H2O densities ranging from ∼ 1,000 to 450 kg · m-3. At H2O densities less than 400 kg · m-3, our calculated ionization constants should be more reliable than those obtained from the commonly-used equation of Marshall and Franck (1981).
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690351007
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    Paper (German National Licenses)
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