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(i)e of the particle& 's the si)e of particle increases, rate of diffu iffus sio ion n dec decreas rease es. !hus !hus, the the spee speed d of particles also increase, which in turn increases the rate of diffusion. OBJECTI,E !o demons demonstra trate te that that rate rate of diffus diffusion ion depend depends s upon upon the following factors&Įner energy gy of the the part partic icle les s incr increa ease ses. It is this physical interaction etween solute% solvent particles that lead to diffusion. Molecules of solute are in constant random motion due to the collision etween molecules of solute and that of the solvent. !his process is known as dissolution of a solid in li#u li#uid id, and and it ta take kes s plac place e due due to the the diff diffus usio ion n of so soli lid d particles into li#uid medium.

If a solid is kept in contact with excess of solvent in which it is solule, some portion of the solid gets dissolved. $owever, diffusion of solids in li#uids does take place, aleit at a very slow "iffusion takes place very rapidly in case of gases, to a lesser extent in case of li#uids and not at all in the case of solids. INTRODUCITON When When sus susta tanc nces es are are rou rough ghtt in co cont ntac actt with with ea each ch other, they intermingle with each other. Without them this project would not have seen the light of day. I woul would d al also so like like to exte exten nd my than thanks ks to Mo Mon nika ika Ma Ma’’am fo forr her motivation and help in the completion of this project. I would like to express this gratitud gratitude e especially especially towards towards all my chemistry chemistry teacher’s teacher’s incl includ udin ing g Me Meen ena a Ma Ma’a ’am m and and Mo Mohi hini ni Ma Ma’a ’am m fo forr thei theirr guid guidan ance ce, supp suppor ortt and and enco encour urag agem emen ent.

SUBMITTED TO: - Mohini Ma’a SUBMITTED BY: Sh!"a Na#a$ ROLL NO: - %&'%&() CLASS: - *II S-% SCHOOL: - Mo+!$n ,i+a Ni.!/anįirst of all, I would like to express my heartfelt gratitude and dedicate this to my teachers and thank them for their faith in me.