The text explains potentiometric analysis and introduces various electrochemical techniques, emphasizing coulometry. Coulometry measures analyte concentration through exhaustive electrolysis, with two...The text explains potentiometric analysis and introduces various electrochemical techniques, emphasizing coulometry. Coulometry measures analyte concentration through exhaustive electrolysis, with two types: controlled-potential and controlled-current. Controlled-potential maintains a constant electrode potential to achieve 100% current efficiency, while controlled-current maintains constant current.
In this section we consider the experimental parameters and instrumentation needed to develop a controlled-potential coulometric method of analysis and its applications.
Coulometry is based on an exhaustive electrolysis of the analyte. By exhaustive we mean that the analyte is completely oxidized or reduced at the working electrode or that it reacts completely with a ...Coulometry is based on an exhaustive electrolysis of the analyte. By exhaustive we mean that the analyte is completely oxidized or reduced at the working electrode or that it reacts completely with a reagent generated at the working electrode. There are two forms of coulometry: controlled-potential coulometry, in which we apply a constant potential to the electrochemical cell, and controlled-current coulometry, in which we pass a constant current through the electrochemical cell.
