Differentiate lyophilic colloid and lyophobic colloid
(Write at least five difference)
Answers
Answer:
Particles in lyophilic sols are lyophilic colloids, and particles in lyophobic sols are lyophobic colloids. The main difference between lyophilic and lyophobic colloids is that lyophilic colloids are thermodynamically stable whereas lyophobic colloids are unstable
Definition
Lyophilic Colloids: Lyophobic colloids are solvent loving colloids.
Lyophobic Colloids: Lyophobic colloids are solvent hating colloids.
Stability
Lyophilic Colloids: Lyophilic colloids are thermodynamically stable.
Lyophobic Colloids: Lyophobic colloids are thermodynamically unstable.
Reversibility
Lyophilic Colloids: Precipitation in the lyophilic sol is a reversible process.
Lyophobic Colloids: Precipitation in the lyophobic sol is an irreversible process.
Interaction
Lyophilic Colloids: There is a strong attraction force between colloids and the liquid.
Lyophobic Colloids: There is less or no attraction between colloids and the liquid.
Viscosity
Lyophilic Colloids: Lyophilic colloids are highly viscous.
Lyophobic Colloids: Lyophobic colloids have the same viscosity as the solvent.
Formation of Sol
Lyophilic Colloids: Lyophilic colloids form a lyophilic sol.
Lyophobic Colloids: Lyophobic colloids form a lyophobic sol.
Water as the Solvent
Lyophilic Colloids: When water is taken as the solvent, lyophilic colloids are known as hydrophilic colloids.
Lyophobic Colloids: When water is taken as the solvent, lyophobic colloids are known as hydrophobic colloids.
Preparation
Lyophilic Colloids: A lyophilic sol can be prepared by the direct addition of dispersion phase (colloids) into dispersion medium (liquid).
Lyophobic Colloids: A lyophobic sol can be formed from special techniques such as mechanical agitation.
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