Question

Which of the following factors cause colloidal particles to remain in solution without settling?

a) Colloidal particles have small solvation layers.
b) Colloidal particles acquire the same kind of charges on their large surface areas.
c) Both a and b
d) Neither a nor b

Answer 1

Colloidal particles remain in solution due to acquiring similar charges on their surfaces, leading to repulsion among the particles, which prevents them from settling.

Step-by-step explanation:

The factors that cause colloidal particles to remain in solution without settling include the fact that colloidal particles acquire the same kind of charges on their large surface areas. When colloidal particles have the same charge, they repel each other, preventing them from aggregating and settling out. This stability can be observed in phenomena such as the Tyndall effect, where light is scattered by colloids, and Brownian motion, where particles move in a rapid and random fashion due to collisions with the molecules of the dispersion medium.