Question

Lyophilic sols are more stable than lyophobic sols because:

• A. the colloidal particles have positive charge
• B. the colloidal particles have negative charge
• C. the colloidal particles are solvated
• D. there is strong electrostatic repulsion between the colloidal particles

Hint:

Lyophilic sols are stabilized by solvation, where solvent molecules surround the colloidal particles, preventing aggregation.

Answer 1

The Correct Option is C

Step 1: Lyophilic sols are more stable because the colloidal particles are solvated, meaning they are surrounded by solvent molecules. This solvation prevents aggregation or coagulation of the particles.
Step 2: In lyophobic sols, the colloidal particles are not solvated, making the sol less stable. These sols are more likely to aggregate because of weak interactions with the solvent.
Step 3: Solvated particles in lyophilic sols create a stable dispersion, which prevents coagulation and enhances the stability of the colloidal system.
Step 4: Hence, lyophilic sols are more stable than lyophobic sols because the particles are solvated.