Thermodynamics of formation of carnallite type double salts |
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| Authors: | Chr Balarew Chr Christov Vl Valyashko S Petrenko |
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| Institution: | (1) Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 SOFIA, Bulgaria;(2) Institute of General and Inorganic Chemistry, Academy of Sciences, Moscow, Russia |
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| Abstract: | The solubility of the systems RbCl–MgCl2–H2O, RbBr–MgBr2–H2O and CsBr–MgBr2–H2O have been investigated by the physicochemical analysis method at 25°C and formation of carnallite type double salts was established. The Pitzer model is used to calculate the thermodynamic functions needed to plot the solubility isotherms of the systems. The results obtained are in good agreement with the experimental data. The free energies of formation of carnallite and bromcarnallite type double salts from simple salts and the standard molar energies of formation are estimated. |
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| Keywords: | Solubility diagram double salts carnallite bromcarnallite Pitzer's model magnesium and alkali metal halides |
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