The titration curve should be developed in spreadsheet format and the limiting current versus the volume of titrant should be plotted.
In Amperometric titrations, equivalence point is determined by measuring the electric current produce by the titration reaction under a constant voltage applied. The diffusion current is measured as a function of volume the titrant added. The end point can be obtained by the intersection of the two lines generated for the current before and after the equivalence point.
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