An investigation of complex species in silver chloride :|bI. Solubility measurements ; II. Extraction of molecular species by a non-polar solvent


The solubility of silver chloride was measured in solutions from 1 x 10^-5M. to 1 x 10^-1M. in chloride ion concentration. Ag^110 was used as a radiotracer to measure the solubility. Evidence for the formation of molecular silver chloride and silver dichloride complex anions was found. A least squares analysis of the experimental data was used to calculate the solubility product constant and the formation constants for the molecular species and the complex ions. The solubility product constant was determined to be 1.74 x 10^-10. The formation constant of the molecular species and the complex ion were calculated to be 1.84 x 10^3 and 1.53 x 10^5 respectively. The agreement of the solubility product constant with that determined by potentiometric measurements was very good. The formation constant of molecular silver chloride was investigated further by extraction with an organic solvent. Nitrobenzene was used as the solvent and the distribution coefficient for the molecular silver chloride in nitrobenzene and aqueous solutions was determined to be 0.32. Evidence was found for the extraction of the molecular species and not the silver ions. However, at high chloride concentrations HAgCl_2 appears to be extracted. By the use of the distribution coefficient, and the concentration of silver in the organic phase, the formation constant of the molecular species was determined to be 1.5 ± .5 x 10^3.



College and Department

Physical and Mathematical Sciences; Chemistry and Biochemistry


Date Submitted


Document Type




Silver chloride, Extraction (Chemistry), Chemistry, Organic



This document is currently not available here.