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प्रश्न
What is the role of diffusion in heterogenous catalysis?
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उत्तर
The gaseous molecules diffuse on to the surface of the solid catalyst and get adsorbed. After the required chemical changes the products diffuse away from the surface of the catalyst leaving the surface free for more reactant molecules to get adsorbed and undergo reaction.
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संबंधित प्रश्न
What is the effect of temperature on chemisorption ?
Why is adsorption always exothermic?
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.
Give reason why a finely divided substance is more effective as an adsorbent.
Discuss the effect of temperature on the adsorption of gases on solids.
Write one similarity between Physisorption and Chemisorption
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 ____________.
Chromatography is based on the principle of ____________.
Extent of physisorption of a gas increases with ______.
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
What is the role of adsorption in heterogenous catalysis?
In physical adsorption, gas molecules are bound on the solid surface by
Which of the following statements is incorrect regarding physisorptions?
