Which of the following statements is incorrect? Solubility is a thermodynamic parameter and gives a measure of the amount of penetrant sorbed by the membrane under equilibrium conditions The diffusivity is a kinetic parameter which indicates how fast a penetrant is transported through the membrane Diffusivity is dependent on the geometry of the penetrant, for as the molecular size increases the diffusion coefficient decreases Diffusivity is dependent on the geometry of the penetrant, for as the molecular size decreases the diffusion coefficient decreases
Question
Which of the following statements is incorrect? Solubility is a thermodynamic parameter and gives a measure of the amount of penetrant sorbed by the membrane under equilibrium conditions The diffusivity is a kinetic parameter which indicates how fast a penetrant is transported through the membrane Diffusivity is dependent on the geometry of the penetrant, for as the molecular size increases the diffusion coefficient decreases Diffusivity is dependent on the geometry of the penetrant, for as the molecular size decreases the diffusion coefficient decreases
Solution
The incorrect statement is: "Diffusivity is dependent on the geometry of the penetrant, for as the molecular size decreases the diffusion coefficient decreases".
This is incorrect because generally, as the molecular size decreases, the diffusion coefficient increases. This is due to the fact that smaller molecules can move more freely and quickly through a medium compared to larger molecules.
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