Low-temperature heat capacity and thermodynamic properties of PrPO 4

K. S. Gavrichev; V. M. Gurevich; M. A. Ryumin; A. V. Tyrin; L. N. Komissarova

doi:10.1134/S001670291602004X

Low-temperature heat capacity and thermodynamic properties of PrPO₄

Authors: Gavrichev K.S.¹, Gurevich V.M.², Ryumin M.A.¹, Tyrin A.V.¹, Komissarova L.N.³
Affiliations:
1. Kurnakov Institute of General and Inorganic Chemistry
2. Vernadsky Institute of Geochemistry and Analytical Chemistry
3. Chemical Faculty
Issue: Vol 54, No 4 (2016)
Pages: 362-368
Section: Article
URL: https://journals.rcsi.science/0016-7029/article/view/155145
DOI: https://doi.org/10.1134/S001670291602004X
ID: 155145

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Abstract

The heat capacity of praseodymium orthophosphate PrPO₄ was measured by adiabatic and relaxation calorimetric techniques at 5.12–345.54 K, and these data were utilized to calculate thermodynamic functions of PrPO₄ at 6–350 K. The Gibbs free energy of PrPO₄ formation Δ_fG⁰(298.15 K) is evaluated at 1851.8 ± 4.7 kJ mol^–1.