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प्रश्न
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
विकल्प
decrease in temperature
increase in temperature
increase in surface area of adsorbent
decrease in surface area of adsorbent
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उत्तर
Physical adsorption of a gaseous species may change to chemical adsorption with increase in temperature.
Explanation:
On increasing temperature physisorption changes to chemisorption. As the temperature increases, energy of activation of adsorbate particles increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
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संबंधित प्रश्न
Write the differences between physisorption and chemisorption with respect to the following:
(i) Specificity
(ii) Temperature dependence
(iii) Reversibility and
(iv) Enthalpy change
Differentiate between adsorbtion and absorption.
What is the effect of temperature on chemisorption ?
Write any two characteristics of chemisorption.
Why are powdered substances more effective adsorbents than their crystalline forms?
Distinguish between the meaning of the terms adsorption and absorption. Give one example of.
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?
Answer in one sentence:
Name type of adsorption in which vander Waals focres are present.
Which of the following is an example of physisorption?
Powdered substances are more effective adsorbents than their crystalline forms because ____________.
In physisorption, adsorption is generally ____________.
The extent of adsorption increases with the ____________.
The physical adsorption is due to ____________.
Why do physisorption and chemisorption behave differently with rise in temperature?
Give an example where physisorption changes to chemisorption with rise in temperature. Explain the reason for change.
Chromatography is based on:-
