Question

Diffentiate between absorption and adsorption.

Answer 1

Sr. No.	Absorption	Adsorption
1. Definition	It is a process in which any substance (atoms, ions, or molecules) is taken by or absorbed by another substance, especially in the solid or liquid material.	The substances like gas, liquids or dissolved solids loosely adhere or stick to the surface of another substance which can be solid or liquid.
2. Type of phenomenon	It is a bulk phenomenon.	It is a surface phenomenon.
3. Type of process	Endothermic process.	Exothermic process.
4. Rate of reaction	Uniform rate.	The reaction rate increases slowly and attains equilibrium.
5. Concentration	Do not change its constant throughout the medium.	The concentration varies from bulk to the bottom of the absorbent.
6. Temperature effect	No effect of temperature.	Works at the lower temperature.
7. Application	Cold storage, ice production, turbine inlet cooling, refrigerants, etc.	Air conditioning, water purification, synthetic resin, chillers, etc.