Dissolution enthalpy measures show the formation of DyTaO and HoTaO oxides, suggesting thermodynamic insights.
The enthalpies of dissolution of orthotantalates of dysprosium and holmium have been measured by the method of discharge calorimetry, on the basis of which the enthalpies of formation from oxides and from simple substances at a temperature of 298.15 K have been calculated. Based on the obtained values and literature values, the temperature dependences of the Gibbs energy of formation from oxides in the region of high temperatures were estimated.
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I.A. Bazhenova (2025) studied this question.
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