Sat May 07, 2011 By:

What is the difference between osmosis and difusion?

Expert Reply
Sun May 08, 2011
 It can occur in any medium.
 It occurs only in liquid medium
 It involves movement of solid, liquid or gaseous molecules.
 It involves movement of liquid (water) molecules only.
 Diffusion does not require any semi-permeable membrane
 Osmosis requires a semi-permeable membrane.
 For example - A person standing far away can smell the perfume when it is sprayed, due to the diffusion of the perfume molecules.
 For example - Swelling of dry raisins when placed in water
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