Fick's law of diffusion states that the rate of diffusion of a gas is directly proportional to the surface area available for diffusion and the difference in partial pressure of the gas, and inversely proportional to the thickness of the membrane through which it diffuses. The formula can be expressed as:
\[ J = \frac{DA(P1 - P2)}{d} \]
Where:
- \( J \) = rate of diffusion
- \( D \) = diffusion coefficient
- \( A \) = surface area available for


