SOLUTE SOLVENT INTERACTIONS - DISSOLUTION OF SPARINGLY SOLUBLE SILVER SALTS IN AQUEOUS ORGANIC-SOLVENT SYSTEMS

The solubilities of the salts Ag2X (where X is sulphate, chromate, tungstate, dichromate, oxalate, malonate, succinate, glutarate or adipate) and Ag3Y (where Y is phosphate or arsenate) have been determined in various compositions of water+dioxan (5, 10, 15 and 20 wt.%), water+urea (11.52, 20.31, 29.64 and 36.83 wt.%), water+mannitol (5 wt.%) and water+sorbitol (5 wt.%) mixtures at different temperatures. The solubility data have been discussed in the light of electrostatic as well as solute-sovent interaction effects on the dissolution processes of the silver salts. Standard transfer thermodynamic quantities derived from the change in the solubility product are also examined.