Investigation of the aqueous lithium and magnesium halide systems |
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| Authors: | Chr Christov Chr Balarew S. Petrenko Vl. Valyashko |
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| Affiliation: | (1) Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Scfia, Bulgaria;(2) N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 117907 Moscow, Russia |
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| Abstract: | The solubilities of the system LiBr–MgBr2–H2O have been investigated at 25°C and 50°C. It is established that the system is of a simple eutonic type. Pitzer's model is used for calculating the thermodynamic functions needed for plotting the solubility isotherms of the systems LiX–MgX2–H2O (X=Cl, Br) at 25°C. According to calculations made, the Gibbs energy of formation of LiCl·MgCl2·7H2O from simple salts is  rG°m=–2.01 kJ-mol–1, while the value fG°m=–2748 kJ-mol–1 corresponds to formation from the elements. |
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| Keywords: | Solubility diagram double salts Pitzer's model bromocarnallite carnallite |
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