Characteristics of adsorption phenomenon
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Adsorption is a surface phenomenon. ... The exact nature of the bonding depends on the details of the species involved, but the adsorption process is generally classified as physisorption (characteristic of weak van der Waals forces) or chemisorption (characteristic of covalent bonding)
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Characteristics of adsorption :
(1) It involves intermolecular forces.
(2) Weak van dar Waals forces give rise to physical adsorption
(3) Strong chemical bonding forces give rise to chemical forces.
(4) Adsorption is exothermic.
(5) In case of physisorption, adsorption decreases with the increase in temperature while in chemisorption it increases.
(6) It is applicable in many industrial processes.
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