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Potentiometric and conductometric studies of cupric chloride and cupric bromide in acetone

Z. Kompišová and J. Gažo

Slovak Technical University, Bratislava


Abstract: The systems CuCl2.2H2O-LiCl-Me2CO Cu(NO3)2.3H2O-LiCl-Me2CO, Cu(ClO4)2.6H2O-LiCl-Me2CO,Cu(NO3)2.3H2O-LiBr-Me2CO, and Cu(ClO4)2.6H2O-LiBr-Me2CO were studied with the potentiometric and conductometric methods and with spectrophotometric measurements. It was detd. that the potentiometric titrn. curves of the systems contg. NO3- are different from the other systems, which indicates that the NO3- enters into the inner sphere of the Cu(II) complex. The stability of the Cu(II)-ligand bond decreases in this order: Cu(II)-Cl-, Cu(II)-NO3-, Cu(II)-ClO4- and Cu(II)-acetone. From the potentiometric and spectrophotometric data, the formation of complex ions of CuCl42- and of CuBr42- was detd. with the same ratio of Cu to Cl or Br; [Cu(II)]:[Cl-] or [Cu(II)]:[Br-] = 1.3 and 1.4.

Full paper in Portable Document Format: 202a105.pdf (in Slovak)


Chemical Papers 20 (2) 105–114 (1966)

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