Stability of Ba2+-15-crown-5 complex in water saturated nitrobenzene

  • E. Makrlík
  • P. Vaňura
Letter to the Editor


From extraction experiments and γ-activity measurements, the extraction constant of the Ba2+ (aq)+SrL2/2+(nb)⇆⇆BaL2/2+ (nb)+Sr2+(aq) equilibrium taking place in a two-phase water-nitrobenzene system (L=15-crown-5; aq-aqueous phase, nb=nitrobenzene phase) was evaluated as logKex(Ba2+,SrL2/2+)=1.8. Further, the stability constant of the BaL2/2+ complex in water saturated nitrobenzene was calculated to be log βnh(BaL22+)=16.5.


Physical Chemistry Inorganic Chemistry Stability Constant Nitrobenzene Extraction Experiment 
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Copyright information

© Akadémiai Kiadó 1999

Authors and Affiliations

  • E. Makrlík
    • 1
  • P. Vaňura
    • 2
  1. 1.Faculty of EducationCharles UniversityPragueCzech Republic
  2. 2.Prague Institute of Chemical TechnologyPragueCzech Republic

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