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Thermodynamic Properties of M2EO4, M2Mo x O3x + 1 and Double Chromates (M = Li, Na, K, Rb, Cs; E = Cr, Mo, W)

  • Chemical Thermodynamics and Thermochemistry
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Abstract

The phase transition temperatures of chromates and molybdates of certain alkali metals, and the melting temperature and enthalpy of polymorphic transformations for tungstates, are determined by means of thermal analysis. Enthalpies of dissolution of rubidium and cesium chromates in water and enthalpies of dissolution of alkali metal tungstates in a melt at 923 K are measured via calorimetry. Standard enthalpies of formation of sought chromates are calculated. The linear correlations between the enthalpies of formation of sulfates, selenates, chromates, tungstates, and molybdates are established, and a linear correlation within − (ΔGoox)-1-(ΔMV)ox)−1 coordinates is found for isopolymolybdates.

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology, Moscow, 125047, Russia

    Yu. L. Suponitskiy, E. S. Zolotova, A. G. Dyunin & S. E. Liashenko

Authors
  1. Yu. L. Suponitskiy
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  2. E. S. Zolotova
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  3. A. G. Dyunin
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  4. S. E. Liashenko
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Corresponding author

Correspondence to S. E. Liashenko.

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Suponitskiy, Y.L., Zolotova, E.S., Dyunin, A.G. et al. Thermodynamic Properties of M2EO4, M2Mo x O3x + 1 and Double Chromates (M = Li, Na, K, Rb, Cs; E = Cr, Mo, W). Russ. J. Phys. Chem. 92, 397–400 (2018). https://doi.org/10.1134/S0036024418030299

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  • DOI: https://doi.org/10.1134/S0036024418030299

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