Original scientific paper

Electrokinetic Studies in Dispersed Systems. III.Electrokinetic Potentials of the Silver Iodide by the Streaming Potential and Electroosmotic Method

M. Mirnik ; Institute »Ruder Boskovic« and Laboratory of Physical Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia, Yugoslavia
V. Pravdić ; Institute »Ruder Boskovic« and Laboratory of Physical Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia, Yugoslavia

Abstract

The zero point of the ~potential (streaming potential and electroosmosis) on AgI coagulated with a neutral electrolyte lies in the region between pAg 5.1 and 6.2 in which region it is irreproducible. The shift of the zero point towards lower pAg values is smallest for the 3-valent and highest for the monovalent cations. The ~potential is independent of the pI value between 3 and 9. The change in concentration of the neutral electrolyte from 10-'
to 10-2 N lowers the ~potential for a factor of 3 to 4. The relation between the ~potential and the coagulation with neutral electrolyte and the isoelectric coagulation is discussed.

Keywords

Hrčak ID:

245376

URI

https://hrcak.srce.hr/245376

Publication date:

8.5.1959.

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