Diffusion

Question 1

Ficks First Law -

Answer 1

J= -D (C2-C1 / X2 - X1)

Question 2

Ficks Second Law -

Answer 2

dC/dt = D d^2C/dx^2
x/Dt = constant

Question 3

Diffusion and temperature

Answer 3

D = Do exp(-Qd/RT)