Cation Exchange Studies of Copper (II) Nitroso-R-Salt Complexes

Chemical Laboratories, University of Allahabad, Allahabad

Received 17 February 1972

Equilibrium distributon measurements of copper (II) at three constant  ionic strengths (0.1, 0.5, 1.0 M, NaNO₃ ) as a function of  nitroso-R-salt (NRS) with a number of cation exchangers have been studied and compared with the distribution of free metal ions. The monocomplex of copper does not exchange in the case of Dowex 50W-X12, while exchange occurs with Dowex 50W-X8 and -X4. Stepwise formation constants of the complex species in aqueous phase were computed to be log K₁  \(^{\mu = 0}\)    and log K₂  \(^{\mu = 0}\)   as 8.63 and 5.70 respectively at 30°.