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Surface Chemistry

Adsorption - physisorption and chemisorption, factors affecting adsorption of gases on solids, catalysis, homogenous and heterogenous activity and selectivity; enzyme catalysis colloidal state distinction between true solutions, colloids and suspension; lyophilic , lyophobic multimolecular and macromolecular colloids; properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation, emulsion - types of emulsions.

chemistry 12th class cbse notes

Emulsions

Emulsions “Emulsions are the colloidal solutions in which both the dispersed phase and the dispersion medium are liquids.” A good example of an emulsion is milk...
chemistry 12th class cbse notes

Colloids

Colloids The colloidal state depends on the particle size. It is regarded as an intermediate state between true solution and suspension. True Solution: In true solution, the...
chemistry 12th class cbse notes

Catalysis

Catalysis Substances, which alter the rate of a chemical reaction and themselves remain chemically and quantitatively unchanged after the reaction, are known as catalysts, and...
chemistry 12th class cbse notes

Adsorption Isotherms

Adsorption Isotherms The variation in the amount of gas adsorbed by the adsorbent with pressure at constant temperature can be expressed by means of a...
chemistry 12th class cbse notes

Factors affecting the extent of adsorption on solid surface

Factors which affect the extent of adsorption on the solid surface: The following are the factors which affect the adsorption of gases on the solid...
chemistry 12th class cbse notes

Difference between Adsorption and Absorption

Difference between Adsorption and Absorption Main points of difference between adsorption and absorption are given below: Adsorption Absorption It is surface phenomenon. It concerns with the whole mass of...
chemistry 12th class cbse notes

Introduction to Surface Chemistry

Surface Chemistry is that branch of chemistry which deals with the study of the phenomena occurring at the surface or interface, i.e., at the...