Relationships among Gibbs free energies and enthalpies of formation of phosphates,oxides and aqueous ions |
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| Authors: | Yves Tardy Philippe Vieillard |
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| Institution: | (1) Institut de Géologie de l'Université Louis Pasteur et Centre de Sédimentologie et Géochimie de la Surface, 1, rue Blessig, F-67084 Strasbourg, France |
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| Abstract: | Two parameters  GO2– and HO2– are defined as the differences between respectively the Gibbs free energies and the enthalpies of formation of an oxide and its corresponding aqueous cation. The Gibbs free energies and enthalpies of formation of phosphates from their consituent oxides are shown to be linear functions of respectively GO2– and HO2– of their constituent cations. |
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