H. S. Choguill, L. Goetz
Jan 21, 1957
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Journal
Transactions of the Kansas Academy of Science
Abstract
Since sulfamates of some of the metals are satisfactory for electroplating and since data regarding these compounds is relatively incomplete, transference numbers of copper and cadmium sulfamates were investigated. There are three experimental methods for determination of transference numbers, or the fraction of current carried by particular ions across the solutions during conduction. Transference numbers may be determined by: (1) the E. M. F. of reversible concentration cells with and without transference; (2) the moving boundary method which makes use of the movement of an ionic boundary between two solutions from which the mobility of the ions can be calculated; (3) an analytical method, developed by Hittorf, which makes use of the concentration changes which take place in the solution near the electrodes during electrolysis. In considering the E. M. F. method it soon became evident that the problem would be complicated from lack of any data on activities of solutions of sulfamates. Determination of such information should