Diffusion Coefficient

Honestly, I don't have a definition of diffusion coefficients that's any better than wikipedia, but that's fine because I can count on one hand the number of times I've needed to find it. If you have an analyte that undergoes a reversible electron transfer during a CV, you can determine its diffusion coefficient the peak current (i_p) of the reversible wave using the following equation

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where D is the diffusion coefficient (cm²/s), F is Faraday's constant (96,485 C mol^–1), A is the area of the electrode (cm²), C is the concentration of the analyte in the bulk solution (mol cm^–3), v is the scan rate (V/s), T is the temperature (in Kelvin), R is the gas constant (8.315 J K^–1 mol^–1).

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