Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

What is the difference between physisorption and chemisorption?

What is the difference between physisorption and chemisorption?

Grade:

1 Answers

Gaurav
askIITians Faculty 164 Points
6 years ago

Physisorption

  • Only van der Waals force are present between adsorbate and surface of adsorbent
  • Low enthalpy of adsorption ie, in the order of 20 kjmol-1.
  • Reversible
  • It is usually takes place atlow temperatureand does not require any activation energy.
  • Multi molecular layer of adsorbate are formed on the surface
  • Not specific.

Chemisorption

  • Chemical bonds are formed between adsorbate and surface of adsorbent
  • High enthalpy of adsorption i.e,order of 200 kjmol-1.
  • Irreversible
  • It takes place athigh temperatureand require activation energy..
  • Onlymonomolecular layersare formed.
  • Highly specific.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free