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'Stability Constants' in keywords Facet   Publication Year 1976  [X]
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1976[X]
1Author    G. AndereggRequires cookie*
 Title    Komplexone, XLVII Die Thermodynamik der Komplexbildung von einigen ein-und zweiwertigen Metallionen mit Aethylendiamintetraacetat-und Uramildiacetat-Ion Complexone, XLVII Thermodynamics of Complex Formation of Some Univalent and Bivalent Metal Ions with Ethylenediaminetetraacetate and Uramildiacetate Anions  
 Abstract    The enthalpies of complex formation of EDTA and uramildiacetate (UDA) with univalent cations (H+, Li+, Na+, K + , Ag+ and T1+) have been obtained by direct calori-metric measurements at ionic strength 0.1 (or 1) and 20 °C. For comparison data for the formation of 1:1 UDA complexes with Mg 2+ , Ca 2+ , Ba 2+ and Sr 2+ have also been obtained. From these values and the stability constants the thermodynamic functions A G and A S are calculated. The results are compared with those of similar systems. 
  Reference    (Z. Naturforsch. 31b, 786—789 [1976]; eingegangen am 15. März 1976) 
  Published    1976 
  Keywords    EDTA Complexes, Uramildiacetate Complexes, Stability Constants, Enthalpy, Entropy 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0786.pdf 
 Identifier    ZNB-1976-31b-0786 
 Volume    31 
2Author    Jürgen PolsterRequires cookie*
 Title    Ein neues Verfahren zur spektrometrischen Analyse von Metallkomplex-Lösungen A New Method for Spectrometric Analysis of Complex Metal Solutions  
 Abstract    A new simple method is given to analyse potentiometrically titrated and spectrophoto-metrically measured complex-solutions of the system AH ^ A -j-H3Ü+ and n • A + M^MA n . The absorbance coefficients of the metal complex MA n and the stability constants can be determined for each titration step by construction of the "extinction triangle" in the (two-dimensional) absorbance (E) diagram. It is not necessary to know the absolute pH value of the solution. The titration of 2-nitroso-l-naphthol-4-sulfonic acid/zinc sulfate in water is shown as an example. 
  Reference    (Z. Naturforsch. 31b, 1621—1625 [1976]; eingegangen am 15. September 1976) 
  Published    1976 
  Keywords    Spectrophotometry Titrations, Absorbance Diagrams, Complex, Stability Constants, Absorbance Coefficients 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1621.pdf 
 Identifier    ZNB-1976-31b-1621 
 Volume    31