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Thermodynamic properties of compounds in the PdO-H sub(2)O system at 25 degree C

Literature thermodynamic data on species and particles existing in the heterogeneous PdO-H sub(2)O system were checked for consistency, and the equilibrium constants for dissolution of palladium oxide and hydroxide in water and for Pd super(2+) (aq) hydrolysis were recommended. Delta f G sub(298.15)...

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Bibliographic Details
Published in:Geochemistry international 2013-11, Vol.51 (11), p.912-919
Main Authors: Polotnyanko, NA, Khodakovskii, IL
Format: Article
Language:English
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Summary:Literature thermodynamic data on species and particles existing in the heterogeneous PdO-H sub(2)O system were checked for consistency, and the equilibrium constants for dissolution of palladium oxide and hydroxide in water and for Pd super(2+) (aq) hydrolysis were recommended. Delta f G sub(298.15) super( degree ) obtained in this work for Pd super(2+)(aq) sharply differs (no less than by 6 kJ/mol) from values that are reported in fundamental thermodynamic reference books and based on experimentally measured palladium electrode potential at 25 degree C. Detailed examination of literature data on the thermodynamic properties of compounds in the Cl-Pd(aq) system is required to account for revealed inconsistency.
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702913110074