Observations on the Interaction of Ion Exchange Resins with Some Cupric Compounds

Year: 1952 DOI: 10.7907/CMRX-8587
The interaction of the Sulfonic Acid Resin, Nalcite HCR, with CuII halide solutions was studied in hope of obtaining dissociation constants for the complex ions CuX⁺. The fact that CuX⁺ is absorbed by the resin to an appreciable extent prevented the attainmnet of this goal. It was found in the case of CuF⁺ that the complex ion is absorbed even more strongly than Cu⁺⁺. The presence of a Cu⁺⁺-F⁻ complex was indicated by spectrophotometric observations.

The action of the carboxylic acid resin, IRC - 50 was studied in a column. It was found that the volume of the resin in the Cu⁺⁺ salt form depended on the salt with which the resin was treated. In the case of solutions of Cu(OAc)₂ it was found that Cu(OAc)⁺ was taken into the resin as well as Cu⁺⁺.

A titration curve for IRC - 50 with NaOH in solutions of ionic strength one is given.