The concentration of active cadmium ions in aqueous solutions of cadmium halides in the presence of the corresponding potassium halides

by R. V. Peryman

Institution: University of Canterbury
Department: Chemistry
Year: 1934
Record ID: 1514096
Full text PDF: http://hdl.handle.net/10092/8164


When two salts of different electro affinities are present in solution, complex salts may be formed, the stronger salt appearing to force the weaker into the anion. The suggestion that the abnormal behaviour of certain electrolytes might be accounted for by assuming the formation of complex ions was first put forward by Hittorf, who, is the course of his study of migration, discovered that the migration ratio for the anion in solutions of many double salts and certain single ones, increased rapidly with increase in the concentration of the solution, and at high concentrations became greater than unity. Hittorf suggested that this was due to the formation in the solution of a double salt, which gradually dissociated on dilution.