Question

Distinguish between hydrophilic and hydrophobic colloids.

   Distinguish between hydrophilic and hydrophobic colloids.

Chemistry

Kenneth W. Whitten,… 10th Edition

Chapter 14, Problem 94

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Solved by Expert Manik Pulyani

11/03/2021

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Distinguish between hydrophilic and hydrophobic colloids.

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Key Concepts

Hydrophobic Colloids

Hydrophobic colloids are characterized by colloidal particles that do not interact favorably with water, making them dispersible only in non-polar or weakly polar solvents. In aqueous media, these particles tend to aggregate unless stabilized by surface-active agents, known as emulsifiers or surfactants. The instability in water arises from the lack of sufficient attractive forces between the particles and water molecules, necessitating the use of specialized methods for stabilization.

Hydrophilic Colloids

Hydrophilic colloids are those in which the colloidal particles have an affinity for water. They interact readily with water molecules, leading to stabilization through solvation or hydration. This interaction results in the formation of a stable dispersion in polar solvents, usually without the need for additional stabilizers. The particles remain uniformly distributed due to the favorable energetic interactions with the solvent.

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