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Diffusion maintains the concentration difference between high and low concentrations.

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Diffusion maintains the concentration difference between high and low concentrations.

(a) True

(b) False

I have been asked this question in my homework.

Question is taken from Role of Diffusion in Bioprocessing topic in division Mass Transfer of Bioprocess Engineering

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Right answer is (b) False

Explanation: Molecular diffusion is the movement of component molecules in a mixture under the influence of a concentration difference in the system. It occurs in the direction required to destroy the concentration difference. If the gradient is maintained by constantly supplying material to the region of high concentration and removing it from region of low concentration, diffusion will continue.

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