Bestimmung der Dissoziationskonstanten der Formen H5
Y
+, H4
Y und H3
Y
? der ÄDTE |
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| Authors: | P Mészáros G Vinek N Konopik |
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| Institution: | 1. Institut für Physikalische Chemie der Universit?t Wien, Wien, ?sterreich
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| Abstract: | A critical examination of the methods used in evaluating the constantsk 6, k5, k1 andk 2 of EDTA shows that potentiometric titration is suitable for the determination of the constantsk 1 andk 2 only, but not fork 6 andk 5. On the other hand the dependence of the solubility of EDTA upon pH can be used to evaluatek 1,k 2 andk 5, but notk 6 for the applied experimental conditions (25°C; ionic strength 0,1 m). |
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