wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following is not characteristic of chemisorption?

A
Adsorption is specific
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Heat of adsorption is of die order of 200 kJ mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Adsorption is irreversible
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Adsorption may form multimolecular layers
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is C Adsorption may form multimolecular layers
Chemisorption is a kind of adsorption which involves a chemical reaction between the surface and the adsorbate. New chemical bonds are generated at the adsorbent surface.
Various characteristics of Chemisorption are-
  • High specificity: Chemisorption is highly specific and it will only occur if there is some possibility of chemical bonding between adsorbent and adsorbate.
  • It is irreversible in nature.
  • Surface area: Chemisorption increases with the increase of the surface area of the adsorbent.
  • Enthalpy of adsorption: Enthalpy of chemisorption is high (80240kJ mol1)) as it involves chemical bond formation.
  • Chemisorption doesn't form multimolecular layers and hence option D is a correct answer.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Physisorption and Chemisorption
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon