of the reagent in the mixing gradient chamber, the reaction
cannot probably proceed to completion. However, because it
is known that acid–base reactions are, in general, very fast,
the only possible explanation for the decreased reaction rate
is slow bounding of the analyte to the surfactant micelles.
When the same potentiometric titration was carried out with
the classical batch arrangement, equilibrium was also established
slowly and the potential could be read off only several
minutes after adding the titration reagent.