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- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/24%3A_Coulometry/24.03%3A_Potentiostatic_Coulometrylled-current coulometry has two advantages over controlled-potential coulometry. First, the analysis time is shorter because the current does not decrease over time. A typical analysis time for contro...lled-current coulometry has two advantages over controlled-potential coulometry. First, the analysis time is shorter because the current does not decrease over time. A typical analysis time for controlled-current coulometry is less than 10 min, compared to approximately 30–60 min for controlled-potential coulometry. Second, because the total charge is simply the product of current and time, there is no need to integrate the current-time curve.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/11%3A_Electrochemical_Methods/11.07%3A_Chapter_Summary_and_Key_TermsThis chapter covers three electrochemical analysis methods: potentiometry, coulometry, and voltammetry. Potentiometry involves measuring potential without significant current and using the Nernst equa...This chapter covers three electrochemical analysis methods: potentiometry, coulometry, and voltammetry. Potentiometry involves measuring potential without significant current and using the Nernst equation to calculate analyte activity. Coulometry is based on Faraday???s law to determine analyte quantity through electrical charge or current.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/11%3A_Electrochemical_Methods/11.03%3A_Coulometric_MethodsThe 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.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/12%3A_Electrochemical_Methods/12.3%3A_Coulometric_MethodsCoulometry 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.
