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Why does physisorption decrease with inc...

Why does physisorption decrease with increase in temperature ?

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Physissorption is of exothermic nature (`DeltaH` is negative). The rise in temperature favours the rrverse process i.e., desorption. Therefore, physisorption decreases with rise in temperature.
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Why dows physisoption decrease with increase of temperature ?

Give reason for the Physisorption decreases with increase in temperature.

Rate of physisorption increases with decrease in temperature increase in temperature decrease in pressure decrease in surface area

Which of the following statements is not true? a. Both physisorption and chemisorption are exothermic. b. Physisorption occurs with increase of free energy. c. Physisorption requires low activation energy but chemisorption requires high activation energy. d. The magnitude of chemisorption increases and that of physisorption decreases with rise in temperature.

Assertion : In physisorption, adsorption decreases with increase in tempetrature. Reason : Lhysisorption is of eothermic nature.

DINESH PUBLICATION-SURFACE CHEMISTRY -QUESTION FROM BOARD EXAMINATIONS
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  2. What will happen when a small amount of NaCl solution is added to hydr...

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  6. What is coagulation process ?

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  7. What is an emulsion ?

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  8. Name two types of adsorption phenmenon.

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  9. Name the catalyst and promoter in the Haber's process for the manufact...

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  10. What are the physical states of the dispersion medium and dispersed ph...

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  11. Adsorption of a gas on the surface of solid is sgenerally accompanied ...

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

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  13. What do you understand by shape selective catalysis? Why are zeolites ...

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  14. Name a process by which coagulation of lyophobic sol can be carried ou...

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  15. What is a reversible sol. ?

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  16. How are the folowihg colloids different with respwct ot dispersed phas...

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  17. Give one example of aerosol and gel.

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  19. Explain what is observed when : (i) a beam of light is passed throug...

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