Question

types of adsorption?????????????????????????

Answer 1

Answer:

Explanation:

Types of Adsorption

On the basis of interaction forces between adsorbate and adsorbent, adsorption is of two types.  

Physical adsorption:

This type of adsorption is also known as physisorption. It is due to weak Van der Waals forces between adsorbate and adsorbent.  

For example, H2 and N2 gases adsorb on coconut charcoal.

Chemical adsorption:

This type of adsorption is also known as chemisorption. It is due to strong chemical forces of bonding type between adsorbate and adsorbent. We can take the example involving the formation of iron nitride on the surface when iron is heated in N2 gas at 623 K.  

Adsorption of gas on a solid is a spontaneous exothermic reaction. Amount of heat liberated when a unit mass of a gas is adsorbed on the surface is called heat of adsorption

Answer 2

Answer:

Type I isotherm describes adsorption on microporous adsorbent. Type II represents adsorption on macroporous adsorbent with strong adsorbent + adsorbate interactions, while type III works with the weak interaction. Type IV and V isotherms correspond to mono- and multilayer adsorption with capillary condensation.

Explanation:

Types Of Adsorption

Depending upon the nature of forces which hold the molecules of the adsorbate on the surface of the adsorbent, the adsorption is classified into two types:

1) Physical adsorption and.

2) Chemical adsorption.