Original scientific paper

The Silver-Silver Iodide Electrode. II

M. Mirnik ; Laboratory of Physical Chemistry, Faculty of Science, University of Zagreb
R. Despotović ; Institute »R . Boskovic«, Zagreb, Croatia, Yugoslavia

Abstract

Electrolytically prepared Ag/ Ag! electrodes, fresh and aged in
solutions of pAg values higher than 4.3, show in the region of
pAg=6' to pI=.6 negative deviations from the reversible Nernst
potential. Electrodes aged in solutions of pAg values lower than 4.3
show positive deviations in the same region. The zero· point of the
electrophoretic mobility of aged coloidal Ag! and the positive stability
limit of activity are equal to pAg=4.3. In the region pI= 7
to pAg==7 the positive and negative deviations are practically
constant and independent of pAg (pl). The positive deviation of the
electrode potentials was explained by the formation of the cubic,
and the negative one by the formation of the hexagonal modification
of Ag! during the aging of the electrodes.

Keywords

Hrčak ID:

208603

URI

https://hrcak.srce.hr/208603

Publication date:

16.3.1961.

Visits: 969 *