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The thermodynamic characteristics of vaporization in the NaI-PrI3 system

  • Chemical Thermodynamics and Thermochemistry
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Abstract

The vaporization of the NaI-PrI3 quasi-binary system was studied by high-temperature mass spectrometry over the whole concentration range. At 623–994 K, saturated vapor contained not only (NaI) n and (PrI3) n molecules (n = 1, 2) and Na+(NaI) n (n = 0–4) and I−(PrI3) n (n = 1–2) ions but also mixed molecular and ionic associates recorded for the first time (NaPrI4, Na2PrI5, NaPrI +3 , Na2PrI +4 , Na3PrI +5 , Na4PrI +6 , NaPrI −5 , and NaPr2I −8 ). The partial vapor pressures of molecules were calculated, and the equilibrium constants of the dissociation of neutral and charged associates were measured. The enthalpies of molecular and ion-molecular reactions were determined, and the enthalpies of formation of gaseous molecules and ions were obtained.

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Authors and Affiliations

  1. Ivanovo State University of Chemical Technology, Ivanovo, Russia

    V. B. Motalov & L. S. Kudin

  2. Research Center, Juelich, Germany

    T. Markus

Authors
  1. V. B. Motalov
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  2. L. S. Kudin
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  3. T. Markus
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Corresponding author

Correspondence to L. S. Kudin.

Additional information

Original Russian Text © V.B. Motalov, L.S. Kudin, T. Markus, 2009, published in Zhurnal Fizicheskoi Khimii, 2009, Vol. 83, No. 5, pp. 818–825.

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Motalov, V.B., Kudin, L.S. & Markus, T. The thermodynamic characteristics of vaporization in the NaI-PrI3 system. Russ. J. Phys. Chem. 83, 705–712 (2009). https://doi.org/10.1134/S0036024409050033

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