title: On potentiometric titration curves in complexometry.
abstract: An equation is given which describes the potential change during complexometric titration of metals with potentiometric end-point detection. The potential of the indicator electrode (e.g., silver or mercury electrode) depends on the equilibrium of the reaction MY + W right harpoon over left harpoon WY + M, where W represents the indicator metal ion, and M the metal ion determined by titration with the ligand Y, forming 1:1 chelates. Introduction of the conditional stability constants and corresponding side-reaction coefficients facilitates the prediction of the limits of application of this type of titration as well as the optimum conditions for the determination.
authors.affiliation: Department of Inorganic Chemistry, University, Warsaw, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Hulanicki
authors.forename: M
authors.initials: M
authors.lastname: Trojanowicz