The behaviour of precipitating systems of Mg,Ca, Sr,Ba, Mn and Zn-oxalates in aqueous and in the ethanol medium at the room temperature |
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| Authors: | B Novosel B Težak Z Čular-Elijaš A Haraminčić V Jakopović B Ryznar M Štiglić M Vidas |
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| Institution: | (1) Laboratory of Physical Chemistry, Faculty of Science, University of Zagreb, Zagreb, Jugoslavia |
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| Abstract: | Summary The behaviour of precipitating systems of Mg, Ca, Sr, Ba, Mn and Zn oxalates  in statu nascendi from the electrolytic solutions in water and in ethanol were determined by tyndallometric technique. PDs (diagrams by plotting of logarithms of concentrations of cationic component against anionic one) show the limits of liquid/solid phase. According to the PDs, the solubility of oxalates in water increases in the following order: Ca < Sr < Zn < Ba < Mg < Mn. In the alcohol medium, the complexes disappear, the limits approach to the ionic solubility products.
Zusammenfassung Die Reihe der Mg, Ca, Sr, Ba, Mn und Zn-Oxalate wird tyndallometrisch in wässeriger und wässerigäthanolischer Base untersucht. Die Ergebnisse werden in sog.  Fällungsdiagrammen dargestellt. Nach diesen steigt die Löslichkeit der Oxalate in der Reihe: Ca < Sr < Zn < Ba < Mg < Mn.
With 3 figures |
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