Abstract
In the present part, potential functions are derived for the calculation of the total potential anomalies, Δ E B and Δ E H, for Emf cells where strong or weak complexes are formed, respectively. A weak or strong electrolyte is considered to be used as complexing agent (A y L), respectively, at the experimental condition, [Y−] = C mol⋅L−1, constant. The cells have indicator electrodes reversible to Bz(B)+ (cell B) and H+ ions (cell H), respectively.
The system, HY–BY z(B)-A Y L-AY and the protolysis of the acids HL and H2L in the ionic medium (A+, Y−) are studied. Here, y = |z L |. Moreover, some useful Emf titrations are suggested for the experimental determination of the slope functions SL(H, L−), SL (H, L2−) and SL(H, HL−). The usefulness of the derived potential functions is established using the H+-acetate− (CH3COO−) system as an example.
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Néher-Neumann, E. The Liquid Junction Potential in Potentiometric Titrations. IX. The Calculation of Potentials Across Liquid Junctions of the Type, AY|AY+BY z(B)+HY+ A y L, for Emf Cells where Strong or Weak Complexes are Formed, Respectively, at [Y−] = C mol⋅L−1, Constant and −log 10[H+]≤ 7. J Solution Chem 35, 1109–1136 (2006). https://doi.org/10.1007/s10953-006-9052-y
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DOI: https://doi.org/10.1007/s10953-006-9052-y