CBSE Class 12 Chemistry Surface Chemistry Notes and Questions

CBSE Class 12 Chemistry Surface Chemistry Notes and Questions. Based on CBSE and NCERT guidelines. The students should practice these Questions to gain perfection which will help him to get more marks in CBSE examination. The preparation should be in a manner which helps the students to concentrate more in areas which carry more marks.

The branch of the Chemistry wich deals with the study of surface phenomena is called surface Chemistry.


1. Adsorption: - The accumulation of molecules species at the surface rather in the bulk of a solid or liquid is termed adsorption.
2. Desorption:-Removal of adsorbate from the surface of adsorbent is known as Desorption.
3. Sorption:-When adsorption and absorption both takes place simultaneously.
4. Type of adsorption: - On the basis of interaction between adsorption and absorption, adsorbate are of two types:
(i) Physical adsorption/physisorption: - When weak vander waal interaction involve between adsorbate and adsorbent.
(ii) Chemical adsorption/chemisortion:-When chemical bonds form between adsorbate and adsorbent.
5. Adsorption isotherm:-The variation in the amount of gas adsorbed by the adsorbent with pressure at constant temperature can be expressed by means of a curve termed as adsorption isotherm.
6. Application of adsorption:-
(a) Removal of colouring matter from solution using animal charcoal.
(b)Chromatographic analysis is based on adsorption.
7. Freundlich adsorption isotherm:-It is a graph which shows relationship between the quality of gas adsorbed by unit mass of solid adsorbent and pressure at a particular temperature.
CBSE Class 12 Chemistry Surface Chemistry Notes and Questions

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