Thermochemistry of inorganic sulfur compounds II. Standard enthalpy of formation of germanium disulfide
| Autor: | P.A.G O'Hare, W.T Murray |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Standard enthalpy of reaction
Chemistry Enthalpy Germanium disulfide Atomic and Molecular Physics and Optics Standard enthalpy of formation Gibbs free energy Enthalpy change of solution Enthalpy of atomization symbols.namesake chemistry.chemical_compound symbols Thermochemistry Physical chemistry General Materials Science Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Chemical Thermodynamics. 16:335-341 |
| ISSN: | 0021-9614 |
| DOI: | 10.1016/0021-9614(84)90173-3 |
| Popis: | A high-purity sample of GeS2 was prepared by combining the elements. A fluorine bombcalorimetric study of the reaction: GeS2(cr) + 8F2(g) = GeF4(g) + 2SF6(g), gave) for the standard (po = 101325 Pa) molar enthalpy of formation: ΔfHmo(GeS2, cr, 298.15 K) = −(124.7 ± 2.6) kJ · mol−1. This result does not agree with most of the earlier high-temperature measurements. Two recent studies, however, give ΔfHmo(GeS2) that agrees with the result obtained here. The standard molar Gibbs energy of formation ΔfGmo(GeS2, cr, 298.15 K) is calculated to be −(124.2 ± 2.6) kJ · mol−1. Based upon a comparison of bond enthalpies, the enthalpy of atomization of PbS2, ΔatHmo(PbS2), has been estimated to be (546 ± 20) kJ · mol−1. |
| Databáze: | OpenAIRE |
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