Question :

What are the factors which influence the adsorption of a gas on a solid?

Subject

Chemistry

Standard

Class 10

Views

980

Asked By

Victoria

Prisha
Answer / Solution

The adsorption of a gas on a solid surface is an example of physical adsorption. It is influenced by the following factors :

  1. Nature of the adsorbate
  2. Nature of the adsorbent
  3. Surface area of the adsorbent
  4. Activation of the adsorbent
  5. Effect of pressure
  6. Effect of temperature.

Factors affecting adsorption of a gas on solids are

Nature of the adsorbate: 

The same gas is adsorbed to different extents by different solids at the same temperature. Also, greater the surface area of the adsorbent, more is the gas adsorbed.

Nature of the adsorbent: 

Different gases are adsorbed to different extents by different solids at the same temperature. Higher the critical temperature of the gas, greater is its amount adsorbed.

Surface area of the adsorbent: 

Surface area available for adsorption per gram of the adsorbent increases the extent of adsorption. Greater the surface area, higher would be the adsorption therefore, porous or powdered adsorbents are used.

Activation of adsorbent: 

It means increasing the adsorbing power of an adsorbent by increasing its surface area. It is done by making the adsorbent’s surface rough, removing gases already adsorbed or subdividing the adsorbent into smaller pieces.

Pressure: 

At constant temperature, the adsorption of gas increases with pressure.

Temperature: 

Since adsorption is an exothermic process, applying Le Chatelier’s principle, we can find out that adsorption decreases with an increase in temperature.

Recent Question Update

Advantages Of NCERT, CBSE & State Boards Solutions For All Subjects

  • All the NCERT Solutions have been prepared by academic experts having 10+ years of teaching experience.
  • They have prepared all the solutions in simple and easy language so that each and every student can understand the concepts easily.
  • All the solutions have been explained step to step-wise in details with better explanations.
  • Students can also use these question and answers for your assignments and in homework help.
  • All the solutions have been explained in detail and the answers have been compiled in a step-wise manner.
  • All the questions and answers are commonly prepared according to the Latest Syllabus of Board Education and Guidelines.
  • Students can know about the various types of questions asked in the exams with the help of these solutions.

Top Course Categories