Solubility diagram of (lithium sulfate + sodium sulfate + rubidium sulfate)(aq) at the temperature 298.15 K
| Autor: | S.K. Vasin, A.M. Kalinkin, O.V. Antropova |
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| Rok vydání: | 1994 |
| Předmět: |
Aqueous solution
Ternary numeral system Inorganic chemistry Lithium sulfate Atomic and Molecular Physics and Optics Standard enthalpy of formation Gibbs free energy chemistry.chemical_compound symbols.namesake chemistry Sodium sulfate symbols General Materials Science Physical and Theoretical Chemistry Sulfate Solubility Nuclear chemistry |
| Zdroj: | The Journal of Chemical Thermodynamics. 26:91-100 |
| ISSN: | 0021-9614 |
| Popis: | The phase-equilibrium diagram of (lithium sulfate + sodium sulfate + rubidium sulfate)(aq) at T = 298.15 K has been calculated using Pitzer et al .'s equations. A new compound 5Li 2 SO 4 ·Na 2 SO 4 ·2Rb 2 SO 4 ·2H 2 O has been isolated. The results of the calculation have been confirmed by an experimental study of the solubility. The molar Gibbs free energy of formation of the triple sulfate at T = 298.15 K according to the reaction: 5Li 2 SO 4 ·H 2 O(cr) + Na 2 SO 4 ·10H 2 O(cr) + 2Rb 2 SO 4 (cr) = 5Li 2 SO 4 ·Na 2 SO 4 · 2Rb 2 SO 4 ·2H 2 O(cr) + 13H 2 O(1) was found to be Δ c G o m = -(39.2 ± 0.5) kJ·mol -1 ( p o = 10 5 Pa). |
| Databáze: | OpenAIRE |
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