Grade 12th passPhysical Chemistry
sir can please tell me the reason for stability of lyophilic sols over other ones
1 Answer
Aarti Gupta
Lyophilic sols are those where there is strong affinity between particles and the solvent molecules,so they are thermodynamically more stable(del G<0). Lyophilic sols stability comes from solvation + charge. If solvation interaction alone is strong enough the colloids stay stable at its iso-electric pH if it is not they coagulate at their isoelectric pH.For example-gelatin is stable at its isoelectric condition so called isostable colloids, but it can be precipi-tated with much more salt or dehydration agent (acetone, alcohol).
Thanks & Regards
Aarti Gupta
askiitians Faculty
Thanks & Regards
Aarti Gupta
askiitians Faculty
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