a) Fourier Law
b) Kohlrausch’s Law
c) Fick’s Law
d) Newton’s Law
Answer: c
Explanation: Permeability can be related to Fick’s law of diffusivity. It relates the diffusion flux (J) to the steepness of concentration gradient, where D is diffusion coefficient, C is concentration and x is the distance. It is given by the formula: J = -δC/δx.
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