Question:
Select the incorrect statement.
Select the incorrect statement.
Updated On: Jul 28, 2022
- Physical adsorption is reversible while chemical is irreversible.
- High pressure favours physical adsorption while low pressure favours chemical adsorption.
- Physical adsorption is not specific while chemical is highly specific.
- High activation energy is involved in chemical adsorption.
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The Correct Option is B
Solution and Explanation
Physical as well as chemical both the adsorptions are favoured by high pressure. However, the point of difference is that decrease in pressure causes desorption in case of physical adsorption but not in the case of chemical adsorption.
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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.
