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प्रश्न
Why do physisorption and chemisorption behave differently with rise in temperature?
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उत्तर
Physisorption involves weak van der Waals forces which weaken with rise in temperature. The chemisorption involves formation of chemical bond involving activation energy and like any other chemical reaction is favoured by rise in temperature.
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संबंधित प्रश्न
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
Differentiate between adsorbtion and absorption.
Why is adsorption always exothermic?
Discuss the effect of temperature on the adsorption of gases on solids.
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
How does chemisorption vary with temperature?
How does chemisorption vary with temperature?
Answer in one sentence:
Name type of adsorption in which vander Waals focres are present.
Adsorption increases when ____________.
In physisorption, adsorption is generally ____________.
Chromatography is based on the principle of ____________.
The physical adsorption is due to ____________.
Extent of physisorption of a gas increases with ______.
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
Why is chemisorption referred to as activated adsorption?
Give an example where physisorption changes to chemisorption with rise in temperature. Explain the reason for change.
What is the role of diffusion in heterogenous catalysis?
Write three differences between physisorption and chemisorption.
Which of the following statements is incorrect regarding physisorptions?
