Exams › JEE Main › Chemistry

Lyophilic sols are more stable than lyophobic sols because:

1. there is a strong electrostatic repulsion between the negatively charged colloidal particles.
2. the colloidal particles have positive charge.
3. the colloidal particles have no charge.
4. the colloidal particles are solvated.

Correct answer: the colloidal particles are solvated.

Solution

Lyophilic (solvent-loving) sols have a strong affinity for the medium, so the particles are heavily solvated with a protective solvent layer. This solvation is the main reason they are far more stable than lyophobic sols, which rely mainly on charge.

Related JEE Main Chemistry questions

• At constant temperature, the Freundlich adsorption relation for a gas adsorbed on a solid can be written in terms of the amount adsorbed per unit mass of adsorbent as:
• Which of the following is an example of an irreversible colloid when water acts as the dispersion medium?
• Which of the following forms cationic micelles when its concentration exceeds a certain limit?
• In a micelle, how are the polar and non-polar regions arranged?
• A colloidal dispersion is placed in an electric field, and its particles migrate toward the anode. If the same sol is coagulated using NaCl, BaCl2, and AlCl3 solutions, what is the correct order of their coagulating ability?
• Which of the following electrolytes is the most effective for coagulating ferric hydroxide sol?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →