Adsorption-Types and Applications: What is Adsorption? The molecules or ions present at the surface of a solid do not have all their valencies satisfied and as a result of this unsaturation, they tend to satisfy the residual forces by attracting and retaining the molecules of a gas or dissolved substance with which they come into contact. This phenomenon of adhesion of gases or liquids on the surface of a solid without any penetration into the bulk phase is known as Adsorption. It may also be defined as the phenomenon of having a higher concentration of gases or liquids on the … Continue reading Adsorption-Types and Applications