### Formula

D

diffusion coefficient

D0

maximum diffusion coefficient (at infinite temperature)

T

temperature

EA

activation energy for diffusion

D

diffusion coefficient

D0

maximum diffusion coefficient (at infinite temperature)

T

temperature

EA

activation energy for diffusion

Diffusivity or diffusion coefficient is a proportionality constant between the molar flux due to molecular diffusion and the gradient in the concentration of the species (or the driving force for diffusion). Diffusivity is encountered in Fick's law and numerous other equations of physical chemistry.

D0

T

EA

D

Precision

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