Rate of Diffusion and Concentration Difference

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manohman

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So the rate of diffusion is dependent upon the speed of the molecules and the existence of a concentration gradient.

What about the concentration of the particles themselves?

Diffusion is dependent upon mean free path, this makes sense since if its bouncing off itself it's not going to be moving towards where its lower as fast.
Concentration is inversely proportional to mean free path so does that mean that the diffusion rate is inversely proportional to concentration?

So if you had two compartments and in one case:

10M seperated from 1 M

and in another case

20M seperated from 11M

Diffusion would be faster in the first case? This is confusing because apparently net flux here is the same (from Princeton Review Science Workbook)

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