Figure 1. Histogram representing the equilibrium concentrations of species present in a solution 0.01 M Zn²⁺ + 0.01 M EDTA^4- + 0.25 M NH₃ + 0.25 M NH₄⁺ + 10^-6 M Eriochrome Black T. The log of the equilibrium concentration of a selected species can be read in correspondence of the apex of each bar (the length of the bar increases as the concentration of the corresponding species)

From

Understanding Complexometric Titrations of Metal Cations with Aminopolycarboxylic Acids (EDTA and Analogs) within the frame of the Notion of Reactions between Groups of Chemical Species

Maria Michela SALVATORE, Francesco SALVATORE

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