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Thermomechanische Eigenschaften eines Systems harter Kugeln mit temperaturabhängigem, effektivem Durchmesser

Thermomechanical properties of a hard sphere fluid with temperature dependent effective hard sphere diameter

  • Anorganische, Struktur- und Physikalische Chemie
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Abstract

Equations for the isobaric coefficient of thermal expansion α p , thermal pressure coefficient γ v , and isothermal compressibility β T of a hard sphere fluid are obtained in terms of the respective liquid density, effective hard sphere diameter σ and its temperature dependencel=(d σ/dT)/σ with the aid of the equation of state for a hard sphere fluid due toCarnahan andStarling. In addition, the temperature dependence of the thermal pressure coefficient is calculated, the results being in good qualitative accord with experiment. Differences between calculated and observed values are discussed and several derived quantities (starting with γ v ) are calculated. Specifically, the volume dependence of the molar heat capacity at constant volumeC V , a property which is not easily accessible experimentally, is determined; agreement with published values is quite satisfactory.

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  1. Institut für Physikalische Chemie der Universität Wien, Währinger Straße 42, A-1090, Wien, Österreich

    E. Wilhelm

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Wilhelm, E. Thermomechanische Eigenschaften eines Systems harter Kugeln mit temperaturabhängigem, effektivem Durchmesser. Monatshefte für Chemie 105, 291–301 (1974). https://doi.org/10.1007/BF00907375

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  • DOI: https://doi.org/10.1007/BF00907375

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