ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Algebraic analysis of the equations for calculation of the degree of dissociation of cryolite anions

A. Reháková, J. Vrbenská, and M. Malinovský

Department of Mathematics, School of Economics, 886 33 Bratislava

Abstract:  The equations for calculation of the degree of dissociation d of complex anion AlF₆^3- were analyzed using methods of advanced algebra. Binary mixtures containing lithium cryolite Li₃AIF₆ as one component were chosen as the object of this study. It has been proved that in the case of the systems Li₃AIF₆ — LiF and Li₃AIF₆ —BaF₂, there is just one real solution in the interval (0;1) and therefore the degree of dissociation d can be determined unambiguously. However, in the case of the system Li₃AIF₆—AIF₃ two solutions for the quantity d may exist in the mentioned interval. A method enabling to determine which of the solutions has physical meaning is reported.

Full paper in Portable Document Format: 284a523.pdf

Chemical Papers 28 (4) 523–530 (1974)