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Karnataka Board PUCPUC Science 2nd PUC Class 12

Discuss the effect of temperature on the adsorption of gases on solids. - Chemistry

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Question

Discuss the effect of temperature on the adsorption of gases on solids.

Short Answer
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Solution

Adsorption is generally exothermic; hence, increasing temperature decreases adsorption. In physical adsorption, a rise in temperature weakens van der Waals forces, lowering adsorption. For chemical adsorption, it first increases with temperature due to activation energy requirements, then decreases at higher temperatures as desorption dominates. Thus, the effect of temperature depends on the type of adsorption.

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Chapter 5: Surface Chemistry - 'NCERT TEXT-BOOK' Exercises [Page 326]

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Nootan Chemistry Part 1 and 2 [English] Class 12 ISC
Chapter 5 Surface Chemistry
'NCERT TEXT-BOOK' Exercises | Q 5.10 (ii) | Page 326

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