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Why are powdered substances more effective adsorbents than their crystalline forms?


Answer:
Powderded substance are more effective adsorbent than their crystalline forms because when a substance is powdered its surface area increase and physisorption is directly proportional to the surface area of adsorbent,
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What is the role of desorption in the process of catalysis?

In Haber's process, hydrogen is obtained by reacting methane with steam in presence of NiO as catalyst. The process is known as steam reforming. Why is it necessary to remove CO when ammonia is obtained by Haber’s process?


Why does physisorption decrease with the increase of temperature?

Why is the ester hydrolysis slow in the beginning and becomes faster after sometime?

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