Which one of the following is not applicable to chemisorption ?a)Its heat of adsorption is highb)It takes place at high temperaturec)It is reversibled)It forms mono-molecular layersCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Chemisorption is not reversible in nature.whereas physisorption is reversible in nature

Answer

Chemisorption is irreversible in nature because in chemisorption there are strong covalent bond are formed which do not brake easily to separate the reactants because of this it has high heat of adsorption, takes place at high temperatures and forms monolayers.

Answer

Chemosorption is irreversible in nature because in chemosorption there are strong covelent bond are formed which do not brake easily to separate the reactants so it is irreversible. So, option C is correct answer.

Answer

Chemisorption: Not Applicable Characteristics

Chemisorption is a specific type of adsorption that involves the formation of chemical bonds between the adsorbate and the adsorbent surface. Here are the characteristics that are not applicable to chemisorption:

Heat of Adsorption:
- In chemisorption, the heat of adsorption is typically high compared to physisorption. This is because chemisorption involves the formation of chemical bonds, which release or require more energy compared to weaker van der Waals forces in physisorption.

Takes Place at High Temperature:
- Chemisorption often occurs at high temperatures because the formation of chemical bonds requires sufficient energy to overcome activation barriers. This distinguishes chemisorption from physisorption, which can occur at lower temperatures.

Reversible Nature:
- Chemisorption is not reversible in most cases. Once chemical bonds are formed between the adsorbate and the adsorbent surface, they are usually stable and do not easily break. This contrasts with physisorption, which is typically reversible and dependent on factors like temperature and pressure.

Formation of Mono-molecular Layers:
- Chemisorption often results in the formation of mono-molecular layers on the adsorbent surface. This means that a single layer of adsorbate molecules is chemically bonded to the surface, providing a high degree of coverage and specificity. This is different from physisorption, which can form multiple layers depending on the conditions.

Therefore, the statement that chemisorption is reversible is not applicable, as chemisorption is typically considered irreversible due to the formation of stable chemical bonds between the adsorbate and the adsorbent surface.

Top Courses for Class 12

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams