Anson Equation

In electrochemistry, the Anson equation defines the charge-time dependence for linear diffusion control in chronocoulometry.Chronoamperometry/chronocoulometry - Data Analysis https://www.basinc.com/manuals/EC_epsilon/Techniques/ChronoI/ca_analysis

The Anson equation is written as:

:$Q = nFACD^\pi^t^$

where,
:Q = charge in coulombs
:n = number of electrons (to reduce/oxidize one molecule of analyte)
:F = Faraday constant, 96485 C/mol
:A = area of the (planar) electrode in cm²
:C = concentration in mol/cm³;
:D = diffusion coefficient in cm²/s
:t = time in s.

This is related to the Cottrell equation via integration with respect to time (t), and similarly implies that the electrode is planar.

See also

* Voltammetry
* Electroanalytical methods
* Limiting current
* Cottrell equation

References

Electrochemical equations

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