Solubility and Equilibrium of Copper(I) Chloride in Hydrochloric Acid Solutions

Abstract

Solubilities of copper(1) chloride in hydreehloric acid solutions (O.05, v3. O mol/1) centaining perchleric acid were measured at 15-v35"C and under constant ionic strengths of O.2-v6.5 mol/1.
The data were interpteted satisfactorily by assuming the presence of three complexes, CuC12-", CuCls2'-, and CuCls3-, in the solutions. The equilibrium constants of these three eomplexes were determined and cdrrelated as functions of ionic strength and temperature of the solution. The solubility data obtained by the present authors and previous investigators were compared with those calculated using the empirical equations obtained in the present work. As seen in Fig.7, the Qbserved solubility data were in good agreement with the calculated values within 10%.