Original scientific paper

Heterogeneous Exchange of Precipitates. XI. Influence of Concentration of the Coagulating Co 2 + Ion on the Agl - I- Exchange

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

Abstract

In previous investigation it was shown that the heterogeneous
AgI-I- exchange process depends on the colloido-chemical characteristics
of the system. In the present paper the course of h eterogeneous
AgI-I- exchange process at various Co(N03)2 concentration
has been investigated by measuring the progress of the
exchange process using the radioactive tracer technique (carrier
free 1a1I). The used AgI was coagulated by the in statu nascendi method or by isoelectric precipitation. The concentrations of Co(N03h was from 0.00010 M to 1.0 M , the concentration of the constituent rion
was 0.0010 M (pl 3). In statu nascendi AgI was aged in the
mother liquor fo r tA = 100 and 30.000 minutes prior to exch ange
reaction and the dried isoelectric Agl was for 10 minutes (= to)
kept in contact with the solution in which the exc han ge was
observed.

Keywords

Hrčak ID:

208200

URI

https://hrcak.srce.hr/208200

Publication date:

31.3.1966.

Visits: 658 *