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A particular adsorption process has the ...

A particular adsorption process has the following characteristics : (i) It arises due to vander Waals forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process :

A

Enthalpy is adsorption is greater than `100 kJ mol^(-1)`.

B

Adsorption is monolayer.

C

Adsorption increases with increase in temperature.

D

Energy of activation is low.

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To solve the question regarding the characteristics of a particular adsorption process, we will analyze the provided options based on the definitions and properties of physical adsorption (physisorption) and chemical adsorption (chemisorption). ### Step-by-Step Solution: 1. **Identify the Type of Adsorption**: - The question states that the adsorption process arises due to van der Waals forces and is reversible. - Based on these characteristics, we can conclude that this is a **physical adsorption process** (physisorption), as it is characterized by weak van der Waals forces and is reversible. 2. **Evaluate the Options**: - **Option 1**: "Enthalpy of adsorption is greater than 100 kJ per mole." - This statement is incorrect. Physisorption typically has an enthalpy of adsorption in the range of 20-40 kJ per mole, which is much lower than 100 kJ per mole. - **Option 2**: "Adsorption is monolayer." - This statement is also incorrect. Physical adsorption can form multilayers, while chemisorption is generally monolayer. - **Option 3**: "Adsorption increases with increase in temperature." - This statement is incorrect. For physical adsorption, the adsorption generally increases with a decrease in temperature, as lower temperatures favor the weak van der Waals interactions. - **Option 4**: "Energy of activation is low." - This statement is correct. Physical adsorption has low activation energy compared to chemical adsorption, which involves breaking and forming chemical bonds. 3. **Conclusion**: - The correct statement that describes the above adsorption process is **Option 4: Energy of activation is low**. ### Final Answer: The correct statement that describes the adsorption process is **Option 4: Energy of activation is low**.
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RESONANCE ENGLISH-SURFACE CHEMISTRY-Exercise-3, Part-II JEE (Main)
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  3. Among the following, which surfactant will form micelles in aqueous so...

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  4. Egg albumin is :

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  5. A particular adsorption process has the following characteristics : (i...

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  6. The gold numbers of a few protective colloids are (A) Starch =25 ...

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  7. Among the following, correct statement is :

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  8. Adsorption of a gas on a surface follows Freundlich adsorption isother...

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  9. Which of the following statements about colloids is false?

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  10. If x gram of gas is adsobed by m gram of adsorbent at pressure P the ...

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  11. Two compounds I and II are eluted by column chromatography ( adsorptio...

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  12. Which one of the following is not a property of physical adsorption?

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  13. Adsorption of gas follows Freundlich adsorption isotherm. x is the mas...

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  14. For coagulation of arsenious sulphide sol, which one of the following ...

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  15. Which of the following is not an example of heterogeneous catalytic re...

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  16. Haemoglobin and gold sol are examples of :

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  17. An example of solid sol is :

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  18. Among the colloids cheese (C), milk (M) and smoke (S), the correct com...

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  19. {:("Given",,,,),("Gas",H(2),CH(4),CO(2),SO(2)),("critical ",33,190,304...

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  20. Among the following, the false statement is :

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