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sir can please tell me the reason for stability of lyophilic sols over other ones

sir can please tell me the reason for stability of lyophilic sols over other ones

Grade:12th pass

1 Answers

Aarti Gupta
askIITians Faculty 300 Points
9 years ago
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

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