Standard thermodynamic properties of Ag3Sn (shosanbetsuite): EMF data

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Resumo

Thermodynamic properties of shosanbetsuite (Ag3Sn) are first determined in the Ag–Sn system in a galvanic cell (–) Pt | Gr | Ag | RbAg4I5 | Ag3Sn, Sn | Gr | Pt (+) within the temperature range of 327–427 K in vacuum. Analysis of the data makes it possible to calculate the standard (298.15 K, 105 Pa) ΔfG0, ΔfH0, and S0 of Ag3Sn: –21238, –18763 J mol–1, and 187.5 J K–1 mol–1, respectively.

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Sobre autores

М. Voronin

D.S. Korzhinskii Institute of Experimental Mineralogy of Russian Academy of Sciences

Email: euo@iem.ac.ru
Rússia, Academica Osypyana ul., 4, Chernogolovka, Moscow region, 142432

Е. Osadchii

D.S. Korzhinskii Institute of Experimental Mineralogy of Russian Academy of Sciences

Autor responsável pela correspondência
Email: euo@iem.ac.ru
Rússia, Academica Osypyana ul., 4, Chernogolovka, Moscow region, 142432

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2. Fig. 1. Natural compositions in the Ag-Au-Sn(±Pb, Sb) system, compared with experimental data in the Ag-Au-Sn system at 206 °C (Prince et al., 2006), E is the ternary eutectic.

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3. Fig. 2. Phase diagram of the Ag-Sn system based on data from (Karakaya and Thompson, 1987).

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4. Fig. 3. Experimental values of E(T) obtained in cell (A). A plot of the residuals is shown at the bottom.

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5. Fig. 4. Temperature dependence of the Gibbs energy of Ag3Sn according to the data of different authors.

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