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The excess properties of nitric oxid mixtures

Die Exzeßeigenschaften von Stickstoffoxid-Mischungen

  • Anorganische Und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Abstract

The excess properties of the three mixtures of nitric oxid with methane, krypton, and nitrogen are calculated and compared with experimental values. As nitric oxid is strongly dimerized in the liquid state, the calculation involves the assignment of potential parameters to the nitric oxid monomer and dimer, the statistical mechanical calculation of the excess properties of the fictitious mixtures with monomer and with dimer, and the calculation of the equilibrium properties in the pseudoternary system formed by monomer, dimer, and second component. The comparison with experimental values shows that the calculation gives the correct order of excess values, but fails in some numerical details.

Zusammenfassung

Die Exzeß-Eigenschaften der drei Stickstoffoxid-Mischungen mit Methan, Krypton und Stickstoff werden berechnet und mit experimentellen Werten verglichen. Da Stickstoffoxid im flüssigen Zustand überwiegend dimerisiert vorliegt, beinhaltet die Berechnung die Festlegung der Potentialparameter des Stickstoffoxid-Monomeren und -Dimeren, die statistisch-mechanische Berechnung der Exzeßeigenschaften der fiktiven Mischungen mit Monomer und mit Dimer, und die Berechnung der Gleichgewichtseigenschaften in dem pseudoternären System, das durch Monomer, Dimer und zweite Komponente gebildet wird. Der Vergleich mit den experimentellen Werten zeigt, daß die Berechnung die richtige Reihenfolge und Größenordnung der Exzeß-Werte wiedergibt, aber in manchen numerischen Details versagt.

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Authors and Affiliations

  1. Institut für Thermo- und Fluiddynamik, Ruhr-Universität Bochum, D-4630, Bochum 1, Germany

    Friedrich Kohler, Michael Bohn, Johann Fischer & Roger Zimmermann

Authors
  1. Friedrich Kohler
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  2. Michael Bohn
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  3. Johann Fischer
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  4. Roger Zimmermann
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Dedicated to Prof. Dr.A. Neckel on the occasion of his 60th birthday.

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Kohler, F., Bohn, M., Fischer, J. et al. The excess properties of nitric oxid mixtures. Monatsh Chem 118, 169–182 (1987). https://doi.org/10.1007/BF00810050

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  • DOI: https://doi.org/10.1007/BF00810050

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