Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: Rs.

There are no items in this cart.
Continue Shopping
Grade: 12


Give the difference between physical and chemical adsorption?

11 years ago

Answers : (2)

askIITIians Expert
21 Points

Physical Absorption

Chemical Absorption

1)      Caused by intermolecular van der waal’s forces.

Caused by chemical bond formation

2)      Depends on nature of gas. Easily liquefiable gases are adsorbed readily.

Much more specific and depends upon the nature of both the adsorbate and adsorbent.

3)      Heat of adsorption is small

Very large heat of adsorption

4)      It is reversible

It is irreversible

5)      Forms multimolecular layers on adsorbent surface.

Forms unimolecular layer.

6)      Occurs at low temperature; decreases with increase in temperature

Increase with increase of temperature.

7)      Increase of pressure increases adsorption.

High pressure is favourable. Decrease of pressure does not cause desorption.

8)      Equilibrium is attained readily and it is reversible.

Equilibrium is attained slowly and mostly not reversible.

11 years ago
pooja goyal
18 Points


9 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution

Course Features

  • 141 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!! Click Here for details