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Study of (m1LiX + m2CaX2)(aq) wheremidenotes molality andXdenotes Cl, or Br at the temperature 298.15 K

✍ Scribed by Christomir Christov; Snejana Velikova; Kalina Ivanova

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
140 KB
Volume
32
Category
Article
ISSN
0021-9614

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✦ Synopsis

The molalities m of (m 1 LiBr + m 2 CaBr 2 )(aq) have been investigated in saturated solutions at the temperature T = 298.15 K by the physico-chemical analysis methods. The crystallization of a new double salt LiBr β€’ CaBr 2 β€’ 5H 2 O has been established. The solutions (m 1 LiCl + m 2 CaCl 2 )(aq), and (m 1 LiBr + m 2 CaBr 2 )(aq) have been simulated thermodynamically at T = 298.15 K on the basis of the Pitzer model. The necessary thermodynamic functions (binary and ternary ioninteraction parameters, thermodynamic solubility products) have been calculated and the theoretical solubility isotherms plotted. The calculated data are in very good agreement with the literature data as well as our experimental data. The standard molar Gibbs free energies of reaction r G o m of the synthesis of the double salts LiCl β€’ CaCl 2 β€’ 5H 2 O, and LiBr β€’ CaBr 2 β€’ 5H 2 O from the corresponding simple salts and their standard molar Gibbs free energies of formation f G o m have been determined.

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