Partial Free Energies of the Alkali Chlorides in Fused Mixtures with Magnesium Chloride.

Østvold, Terje; Jacobsen, G. G.; Seip, H. M.; Lindblad, Carl-Gunnar; Lindberg, Alf A.; Jansen, Gert; Lamm, Bo; Samuelsson, Benny

doi:10.3891/acta.chem.scand.23-0688

Cited by 11 publications

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“…Kleppa and McCarty [12] found a large drop in an interaction parameter ilH/X (1-X) at XMgCI2= 1/3 for all MgCl2-alkali chloride systems except MgCI2-LiCl. Ostvold [22] observed unusual behaviour of the partial entropies of mixing in the MgCl2-alkali chloride systems at this composition. In addition, Reding [23] observed for the MgCI2-KCI system a peak in positive excess molar volumes of mixing at XMgCI2 = 1.3.…”

Section: Mgci2-liclmentioning

confidence: 95%

A Determination of the Thermodynamic Properties of MgCl₂in LiCl-Containing Melts from Emf Measurements

Barnes¹,

Thompson²

1988

Canadian Metallurgical Quarterly

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In this study an electrochemical formation cell was used to measure Emf associated with the formation of magnesium chloride in molten salt solutions of magnesium chloride and lithium chloride. Calculated thermodynamic solution properties are in good agreement with experimental and related data published by other workers. The LiCI-rich side of the phase diagram was calculated using estimated properties for the solid solution phase. This was compared with the published diagrams.Experimental properties are in reasonable agreement with those calculated using a molten salt model which proposes the existence of complex anions in equilibrium with the simple ions.

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Section: Mgci2-liclmentioning

confidence: 95%

A Determination of the Thermodynamic Properties of MgCl₂in LiCl-Containing Melts from Emf Measurements

Barnes¹,

Thompson²

1988

Canadian Metallurgical Quarterly

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“…for NaCl [13,26,27] and for MgCl 2 [28,29,30] (Figure 8). Seifert and Thiel [23] measured, by solution calorimetry, the enthalpies of reactions [21] and [22]:…”

Section: B the Nacl-mgcl 2 Systemmentioning

confidence: 99%

“…enthalpy at 298.15 K of reactions [24 through 26] by solu-Activities in the liquid have also been measured by emf tion calorimetry: techniques for KCl [13,27,37] (Figure 11(a)) and MgCl 2 [28,30] KCl (s) ϩ MgCl 2(s) ϭ KMgCl 3(s) [24] (Figures 11(a) and (b)). Seifert and Thiel [23] measured the 2KCl (s) ϩ MgCl 2(s) ϭ K 2 MgCl 4(s) [25] 3KCl (s) ϩ 2MgCl 2(s) ϭ K 3 Mg 2 Cl 7(s) [26] KMgCl 3(s) ϩ K 2 MgCl 4(s) ϭ K 3 Mg 2 Cl 7(s) [27] They obtained values of Ϫ5.5 (Ϯ0.4) kJ/mol for Eq. [24], Ϫ7.75 (Ϯ0.4) kJ/mol for Eq.…”

Section: The Kcl-mgcl 2 Systemmentioning

confidence: 99%

Thermodynamic evaluation and optimization of the LiCl-NaCl-KCl-RbCl-CsCl-MgCl2-CaCl2 system using the modified quasi-chemical model

Pelton

Chartrand

2001

Metall Mater Trans A

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A complete critical evaluation of all available phase-diagram and thermodynamic data has been performed for all condensed phases of the LiCl-NaCl-KCl-RbCl-CsCl-MgCl 2 -CaCl 2 system, and optimized model parameters have been found. The model parameters obtained for binary and ternary subsystems can be used to predict thermodynamic properties and phase equilibria for the multicomponent system. The modified quasi-chemical model for short-range ordering was used for the molten salt phase. Particularly in solutions with MgCl 2 and KCl, RbCl, or CsCl, the calculations indicate a large dregree of ordering on the cationic sublattice, with Mg-Alkali second-nearest-neighbor pairs being favored.

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Chiotti integration of Gibbs‐Duhem relation and unequivocal determination of limiting partial thermodynamic quantities at infinite dilution of binary solution system

Cho

Ochoa

1997

Ber Bunsenges Phys Chem

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Chiotti has made a breakthrough in the thermodynamic theory of solution after nearly a century of frustration. Activity α,i, activity coefficient γi, Darken function αi = In γi/(l‐xi)2 and other partial thermodynamic quantities \documentclass{article}\pagestyle{empty}\begin{document}$ \Delta \bar Q_i^{{\rm{xs}}} \;{\rm{and}}\;\Delta \bar Q_i $\end{document}, where i = Bi and Sn, of binary liquid Bi‐Sn alloy solution system are critically assessed by means of the authentic Chiotti integration, as all those quantities oscillate along composition which made their procurement through classical routes, Gibbs‐Duhem and Darken integrations, impossible. The unambiguous partial quantities at their infinite dilution are obtained from the genuine Chiotti slopes. Interrelations among partial quantities in terms of composition and temperature are presented in detail. We reveal that the apparent Raoultian and Henrian α, vs. Xi behaviors are false and then demonstrate neither Bi nor Sn complies with the Raoult's law and Henry's law. The molten Bi‐Sn system is the athermal type but the behavior of the solution is rather complex and it is definitely neither subregular nor regular solution. In this context the subregular and various symmetrical solutions are systematically developed in relation to function αi and discussed in great detail. A new method of classification of complex solution systems beyond subregular and regular in terms of the difference quantities \documentclass{article}\pagestyle{empty}\begin{document}$ (\Delta \bar Q_B^{{\rm{xs}}} {\rm{-}}\Delta \bar Q_A^{xs} ) $\end{document} is proposed.

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Partial Free Energies of the Alkali Chlorides in Fused Mixtures with Magnesium Chloride.

Cited by 11 publications

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A Determination of the Thermodynamic Properties of MgCl₂in LiCl-Containing Melts from Emf Measurements

A Determination of the Thermodynamic Properties of MgCl₂in LiCl-Containing Melts from Emf Measurements

Thermodynamic evaluation and optimization of the LiCl-NaCl-KCl-RbCl-CsCl-MgCl2-CaCl2 system using the modified quasi-chemical model

Chiotti integration of Gibbs‐Duhem relation and unequivocal determination of limiting partial thermodynamic quantities at infinite dilution of binary solution system

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Partial Free Energies of the Alkali Chlorides in Fused Mixtures with Magnesium Chloride.

Cited by 11 publications

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A Determination of the Thermodynamic Properties of MgCl2in LiCl-Containing Melts from Emf Measurements

A Determination of the Thermodynamic Properties of MgCl2in LiCl-Containing Melts from Emf Measurements

Thermodynamic evaluation and optimization of the LiCl-NaCl-KCl-RbCl-CsCl-MgCl2-CaCl2 system using the modified quasi-chemical model

Chiotti integration of Gibbs‐Duhem relation and unequivocal determination of limiting partial thermodynamic quantities at infinite dilution of binary solution system

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A Determination of the Thermodynamic Properties of MgCl₂in LiCl-Containing Melts from Emf Measurements

A Determination of the Thermodynamic Properties of MgCl₂in LiCl-Containing Melts from Emf Measurements