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Explain the meaning of the statement 'Ad...

Explain the meaning of the statement 'Adsorption is a surface phenomenon'.

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When a solid adsorbent is placed in a closed vessel containing some gas or a solution, the molecules of the gas or the solute are adsorbed on the surface so that their concentration is higher on the surface. Hence, it is called a surface phenomenon.
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PRADEEP-SURFACE CHEMISTRY -ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
  1. Explain the meaning of the statement 'Adsorption is a surface phenomen...

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  2. What are DeltaG, DeltaH and Delta S for addorption of gas on solid ads...

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  3. What is 'occulsion'?

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  4. What do you mena by specific surface area of an adsorbent ?

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  5. Which will adsorb more gas, a lump of charcoal or its powder and why ?

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  6. What is physical adsorption.

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  7. Why is chemisorption irreversible ?

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  8. What is meant by chemical adsorption?

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  9. Of physisorption and chemisorption which type of adsorption has a high...

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  10. Give the expression of Freundlich isotherms.

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  11. What from Freundich adsorption isotherm equation will take at high pre...

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  12. How does increase in tempeature affect both physical and chemical adso...

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  13. Write one similarity between physisorption and chemisorption.

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  14. Define shape selective catalysis. Give an example of a shape selective...

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  15. What is ZSM-5 ? What is its formula ?

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  16. Name two industrial processes in which heterogeneous catalysts are emp...

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  17. Indicate a chemical reaction involving a homogeneous catalyst.

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  18. Write down the heteroheneous catalyst involved in the polymerisation o...

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  19. What is the role of desorption in the process of catalysis ?

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  20. What is the range of particle size in colloidal solution in nm?

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