constant-current coulometry

chemistry

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June 24, 2026

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Constant-current coulometry is an analytical chemistry technique used to determine the quantity of a substance. It's based on Faraday's law, which states a direct relationship between the amount of chemical change and the quantity of electricity used.

In this method, the substance is either directly deposited onto an electrode, or a substance is generated electrolytically that then reacts with the material being analyzed. This is similar to titration but uses electricity instead of a liquid titrant. The key is that the electric current is precisely controlled and used entirely for a single electrochemical reaction involving the substance of interest.12

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chemical analysis
Coulometry
…requirement can be met in constant-current coulometry by using the current to perform a coulometric titration. In a coulometric titration, the current generates a titrant that chemically reacts with the analyte. By keeping the precursor to the titrant in excess, it is possible to ensure that all of the current…
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…requirement can be met in constant-current coulometry by using the current to perform a coulometric titration. In a coulometric titration, the current generates a titrant that chemically reacts with the analyte. By keeping the precursor to the titrant in excess, it is possible to ensure that all of the current…
Read More