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The following are some statements about ...

The following are some statements about physical adsorption
A) involves the weak Vanderwaals interaction between the adsorbate and adsorbent.
B) Involves the chemical interactions between the adsorbent and adsorbate
C) is irreversible in nature
D) It depends upon both nature of adsorbent and adsorbate
The correct combination is 

A

all are correct

B

only (A) and (B)

C

only (A) and (C)

D

only (A)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the statements about physical adsorption, let's analyze each statement step by step: ### Step 1: Analyze Statement A **Statement A**: Involves the weak Vanderwaals interaction between the adsorbate and adsorbent. - **Analysis**: This statement is **correct**. Physical adsorption is characterized by weak Van der Waals forces between the adsorbate (the substance being adsorbed) and the adsorbent (the surface on which adsorption occurs). ### Step 2: Analyze Statement B **Statement B**: Involves the chemical interactions between the adsorbate and adsorbent. - **Analysis**: This statement is **incorrect**. Physical adsorption does not involve chemical bonds; instead, it relies on weak physical forces (Van der Waals forces). Chemical interactions are characteristic of chemical adsorption, not physical adsorption. ### Step 3: Analyze Statement C **Statement C**: Is irreversible in nature. - **Analysis**: This statement is **incorrect**. Physical adsorption is generally reversible. The adsorbate can be desorbed from the adsorbent, indicating that the process can reach an equilibrium state. ### Step 4: Analyze Statement D **Statement D**: It depends upon both the nature of adsorbent and adsorbate. - **Analysis**: This statement is **incorrect**. While the nature of the adsorbent and adsorbate can influence the extent of adsorption, physical adsorption primarily depends on the presence of weak Van der Waals forces, which do not significantly vary with the specific nature of the materials involved. ### Conclusion After analyzing all the statements: - **Correct Statement**: Only Statement A is correct. - **Final Answer**: The correct combination is **A**.
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