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प्रश्न
Why are powdered substances more effective adsorbents than their crystalline forms?
उत्तर
Powdered substances are more effective adsorbents than their crystalline forms because when a substance is powdered, its surface area increases and physisorption is directly proportional to the surface area of the adsorbent
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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.
Write any two characteristics of Chemisorption.
Distinguish between the meaning of the terms adsorption and absorption. Give one example of.
What is the difference between physisorption and chemisorption?
Give reason why a finely divided substance is more effective as an adsorbent.
Discuss the effect of pressure and temperature on the adsorption of gases on solids.
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
Answer in one sentence:
Name type of adsorption in which vander Waals focres are present.
Which of the following is true about chemisorption?
In physisorption, adsorption is generally ____________.
Chromatography is based on the principle of ____________.
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?
What is the role of adsorption in heterogenous catalysis?
A plot of 10 g (x/m) versus 10 g p for the adsorption of a gas on the surface of a solid gives a straight line with slope equal to:-
Rate of physisorption increase with:-
