Question:
Which is not correct regarding the adsorption of a gas on surface of solid
Which is not correct regarding the adsorption of a gas on surface of solid
Updated On: Apr 28, 2024
- On increasing temp. adsorption increase continuously
- Enthalpy & entropy change is – Ve
- Adsorption is more for some specific substance
- Reversible
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The Correct Option is A
Solution and Explanation
The correct option is(A): On increasing temp. adsorption increase continuously.
Adsorption typically decreases with increasing temperature for physical adsorption (physisorption) because higher temperatures provide more thermal energy to the gas molecules, allowing them to overcome the attractive forces from the solid surface more easily and escape from the surface. This behavior is in contrast to chemical adsorption (chemisorption), where adsorption tends to increase with temperature as it involves the formation of chemical bonds, which are often favored at higher temperatures.
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Concepts Used:
Adsorption
Heinrich Kayser, the German physicist was the first to coin the term adsorption. Adsorption can be explained as a surface phenomenon where particles remain attached on the top of a material. Generally, it comprises the molecules, atoms, liquid, solid in a dissolved stage, even the ions of a gas that are attached to the surface. Much to our surprise, the consequence of surface energy i.e. adsorption is present in biological, physical, chemical, and natural systems and are used in many industrial applications.
