Question

diffusion of solids in liquids and gases

Answer 1

Diffusion in Gases:

Diffusion in gases is very fast. This is because the particles in gases move very quickly in all directions.The rate of diffusion of a gas, however, depends on its density. Light gases diffuse faster than heavy gases.Example: When we light an incense stick (agarbatti) in a corner of our room, its fragrance spreads in the whole room very quickly due to the diffusion of its smoke into the air.

Diffusion in liquids:

Diffusion in liquids is slower than that in gases. This is because the particles in liquids move slowly as compared to the particles in gases.Example: The spreading of purple colour of potassium permanganate into water, on its own, is due to the diffusion of potassium permanganate particles into water.