Stability of Ba2+-15-crown-5 complex in water saturated nitrobenzene |
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| Authors: | E Makrlík P Vaňura |
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| Institution: | (1) Faculty of Education, Charles University, 116 39 Prague, Czech Republic;(2) Prague Institute of Chemical Technology, 166 28 Prague, Czech Republic;(3) Present address: 341 42 Kolinec 250, Czech Republic |
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| Abstract: | 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 logK
ex(Ba2+,SrL2/2+)=1.8. Further, the stability constant of the BaL2/2+ complex in water saturated nitrobenzene was calculated to be log βnh(BaL2
2+)=16.5. |
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