Thermodynamic Properties of M2EO4, M2MoxO3x + 1 and Double Chromates (M = Li, Na, K, Rb, Cs; E = Cr, Mo, W)
- Authors: Suponitskiy Y.L.1, Zolotova E.S.1, Dyunin A.G.1, Liashenko S.E.1
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Affiliations:
- Mendeleev University of Chemical Technology
- Issue: Vol 92, No 3 (2018)
- Pages: 397-400
- Section: Chemical Thermodynamics and Thermochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169912
- DOI: https://doi.org/10.1134/S0036024418030299
- ID: 169912
Cite item
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.
About the authors
Yu. L. Suponitskiy
Mendeleev University of Chemical Technology
Email: SvetlanaLiashenko@yandex.ru
Russian Federation, Moscow, 125047
E. S. Zolotova
Mendeleev University of Chemical Technology
Email: SvetlanaLiashenko@yandex.ru
Russian Federation, Moscow, 125047
A. G. Dyunin
Mendeleev University of Chemical Technology
Email: SvetlanaLiashenko@yandex.ru
Russian Federation, Moscow, 125047
S. E. Liashenko
Mendeleev University of Chemical Technology
Author for correspondence.
Email: SvetlanaLiashenko@yandex.ru
Russian Federation, Moscow, 125047