All of the following are true about diffusion EXCEPT: a) Higher temperatures decrease the rate of diffusion O b) Smaller molecules diffuse faster than larger molecules O c) Diffusion is slower over larger distances d) The higher the density of the solvent, the lower the rate of diffusion

Diffusion is the passive movement of molecules or particles (for example, atoms, ions, molecules, energy) from an area of higher concentration to an area of lower concentration.

Option B is Correct:- Because heavier particles will move more slowly and so will have a slower rate of diffusion. Smaller particles on the other hand will diffuse faster because they can move faster.

Option C is Correct:- If the diffusion distance is large, diffusion happens slower because the particles have as far to travel.

Option D is Correct:- Because as the density of a solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium. If the medium is less dense, diffusion increases.