SELF-DIFFUSION OF Ag$sup +$ AND Na$sup +$ IN MOLTEN Ca(NO$sub 3$)$sub 2$-- KNO . Page: 4 of 34

B. J. Welch* and C. A. Angell
Department of Chemistry, Purdue University
Lafayette, Indiaca, 47907
In order to explore the behavior of diffusing ionic species in a molten
salt in which non-Arrhenius behavior of other transport properties is esta-
blished, the diffusivities of Ag+ and Na+ in dilute solution in 38.1%
Ca(N0)2 + 61.9% KNOs have been measured. For both ions limited radio-
tracer diffusion coefficients, determined using a diffusion-out-of-capillary
method, are reported. DA has also been measured by chronopotentiometry, by
which meaos the range and reliability of the measurements were considerably
extended. Chroopaotentiometric and tracer data agree within expected errors
of measurement. Both ionic diffusivities show a non-Arrhenius temperature
dependence which is indistinguishable in magnitude from that of the electrical
conductance of the solvent melt.
*On leave from Department of Applied Chemistry, Univetsity of N.S.W., Sydney.

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Welch, B. J. & Angell, C. A. SELF-DIFFUSION OF Ag$sup +$ AND Na$sup +$ IN MOLTEN Ca(NO$sub 3$)$sub 2$-- KNO ., report, January 1, 1970; Lafayette, Indiana. ( accessed May 19, 2019), University of North Texas Libraries, Digital Library,; crediting UNT Libraries Government Documents Department.

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