Abstract
The heats of dilution of the infinitesimally dilute potassium carnallite solutions at 298.15 K have been studied by continuous titration from 1.8942 to 0.01044 mol·kg−1, and an equation for the curve of heats of dilution has been fitted. It was shown that the enthalpy of dilution for the same concentration of the carnallite solution is equal to the sum of those of KCl and MgCl2 solutions. The equation for the curve of enthalpy of dilution corresponds to that of natural carnallite.
Zusammenfassung
Die Verdünnungswärmen unendlich verdünnter Kaliumkarnallitlösungen bei 298.15 K wurden mittels kontinuierlicher Titration von 1.8942 bis 0.01044 mol/kg untersucht und der Kurve der Verdünnungswärmen eine Gleichung angepaßt. Man zeigte, daß die Verdünnungsenthalpie für die gleiche Konzentration der Karnallitlösung gleich der Summe derer der Lösungen von KCl und MgCl2 ist. Die Gleichung für die Kurve der Verdünnungsenthalpic korrespondiert mit der Kurve für natürliches Karnallit.
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Zen, Z., Zhai, Z., Wang, L. et al. Study on the capacities, heats of dilution and properties of concentrated potassium carnallite solutions at 298.15 K. Journal of Thermal Analysis 45, 53–58 (1995). https://doi.org/10.1007/BF02548663
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DOI: https://doi.org/10.1007/BF02548663