Surface Chemistry
Class 12 Chemistry Surface Chemistry — adsorption versus absorption, physisorption and chemisorption, factors affecting adsorption of gases and the Freundlich isotherm; homogeneous and heterogeneous catalysis, the adsorption theory, shape-selective catalysis by zeolites and enzyme catalysis; and colloids: classification, preparation, purification, the Tyndall effect, Brownian motion, electrophoresis, coagulation with the Hardy-Schulze rule and emulsions, fully solved with NCERT examples.
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Adsorption
Adsorption is the accumulation of a substance at a surface rather than in the bulk. When a gas or a dissolved solute is brought into contact with a so…
Start this topic → 2Catalysis
A catalyst is a substance that changes the rate of a chemical reaction without itself being consumed in the overall change. It works by providing an a…
Start this topic → 3Colloids
A colloid is a heterogeneous system in which one substance (the dispersed phase ) is spread as fine particles through a continuous medium (the dispers…
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