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Difference between physical adsorption and chemisorption are as following: PHYSICAL ADSORPTION CHEMISORPTIONS The forces operating in these are weak     vander Waal’s forces. The forces operating in these cases are similar to those of a chemical bond. The heat of adsorption are low i.e. about 20 – ...

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Adsorption: The phenomenon of attracting and retaining the molecules of a substance on the surface of a liquid or a solid resulting into a higher concentration of the molecules on the surface is called adsorption. The substance thus adsorbed on the surface is called the adsorbate ...

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