Best Answer

Adsorption is different from absorption. When a substance is uniformly distributed throughout the bulk of another substance, this shows that absorption has taken place. It occurs at the uniform rate throughout the body of the material. On the contrary, adsorption involves unequal distribution of the molecular species in the bulk and the surface. It is a surface phenomenon. It is rapid in the beginning and gradually slows down at the equilibrium. The forces involved in adsorption are either weak Vander Waal’s forces or strong chemical bond forces.

In certain cases, both the adsorption and the absorption take place simultaneously and it is not easy to distinguish between them. Such substance is said to be sorbed and the phenomenon is known as sorption. 


Talk to Our counsellor