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The thermochemical properties of BaCeO3(s) and SrCeO3(s) fromT=(5 to 1500) K

✍ Scribed by E.H.P. Cordfunke; A.S. Booij; M.E. Huntelaar

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
182 KB
Volume
30
Category
Article
ISSN
0021-9614

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✦ Synopsis

The standard molar enthalpies of formation of BaCeO s and SrCeO s have been derived 3 3 by combining the standard molar enthalpies of solution of the two compounds in . y3 . y3 Ε½ . Ε½ . 1.00 mol dm HCl q 0.10 mol dm KI aq obtained from literature, and measurements T Γ„ . of auxiliary data. The following values have been derived: ⌬ H BaCeO , s, 298.15 K s f m 3 . y1 T . y1 Ε½ . Γ„ 4 Ε½ . y 1690.0 " 2.5 kJ mol and ⌬ H SrCeO , s, 298.15 K s y 1687.1 " 2.7 kJ mol . f m 3

Low-temperature adiabatic heat capacity measurements and high-temperature enthalpy Ε½ . increment measurements by drop calorimetry have been performed on SrCeO s , and the 3 thermodynamics of formation of the two compounds have been derived at selected temperatures up to T s 1500 K.

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