Question

explain why particles of colloidal solution do not settle down when left undistribute write in the case of suspension they do


plz answer me

Answer 1

◆In colloidal solution particles are in Brownian motion that's why they don't settle down.
◆●one more reason is , the particles of colloid are so small and their density is so less that's why they don't settled down.

While in suspension..particles are quite larger and more density that's why they settle down.

Answer 2

In a colloidal solution the colloidal particles are small and they are being continuously hit upon by the molecules of depression medium.

It is very unlikely that the dispersed face particles will be hit upon by an equal force from all the sides.

Therefore there is a resultant force acting upon the colloidal particles in a particular direction.

And colloidal particles execute zigzag motion called Brownian movement.

Because of this the colloidal particles do not settle down under the influence of gravity.