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Distinction between lyophilic and lyophobic sols

Distinction between lyophilic and lyophobic sols

PropertyLyophilic sols (suspensoid)Lyophobic sols (Emulsoid)
Surface tensionLower than that of the mediumSame as that of the medium
ViscosityMuch higher than that of the mediumSame as that of the medium
ReversibilityReversibleIrreversible
StabilityMore stableLess stable
VisibilityParticles can’t be detected even under ultramicroscopeParticles can be detected under ultramicroscope.
MigrationParticles may migrate in either direction or do not migrate in an electric field because do not carry any charge.Particles migrate either towards cathode or anode in an electric field because they carry charge.
Action of electrolyteAddition of smaller quantity of electrolyte has little effectCoagulation takes place
HydrationExtensive hydration takes placeNo hydration
ExamplesGum, gelatin, starch, proteins, rubber etc.Metals like Ag and Au, hydroxides like , metal sulphides like etc.

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