Question

Choose the correct reason(s) for the stability of the lyophobic colloidal particles.

• A. Preferential adsorption of ions on their surface from the solution
• B. Preferential adsorption of solvent on their surface from the solution
• C. Attraction between different particles having opposite charges on their surface
• D. Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles

Answer 1

Answer: (A), (D)

Preferential adsorption of ions on their surface from the solution
Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles

Lyophobic colloids are stable in nature. It is due to the preferential adsorption of ions on their surface from the solution. The repulsion between the particles is carrying the same charge keeps them separated. The particles will not come close together to form large particles that will precipitate out.

The potential difference between the fixed layer and the diffused layer of opposite charges are around the colloidal particles to make a lyophobic solution stable.

Hence, options A and D are correct.