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प्रश्न
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
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उत्तर
Adsorption is a surface phenomenon. Therefore, the process of adsorption is directly proportional to the surface area available for adsorption to take place. Both physisorption and chemisorption increase with an increase in the surface area. Powdered substances have large surface areas. Hence, powdered substances are more effective adsorbents.
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संबंधित प्रश्न
What is the difference between physisorption and chemisorption?
Give reason why a finely divided substance is more effective as an adsorbent.
How does chemisorption vary with temperature?
Which of the following is true about chemisorption?
Adsorption increases when ____________.
The physical adsorption is due to ____________.
In which of the following reactions heterogenous catalysis is involved?
(a) \[\ce{2SO2 (g) + O2 (g) ->[NO(g)] 2SO3 (g)}\]
(b) \[\ce{2SO2 (g) ->[Pt(s)] 2SO3 (g)}\]
(c) \[\ce{N2 (g) + 3H2 (g) ->[Fe(s)] 2NH3 (g)}\]
(d) \[\ce{CH3COOCH3 (l) + H2O (l) ->[HCI(l)] CH3COOH (aq) + CH3OH (aq)}\]
Why is chemisorption referred to as activated adsorption?
Why do physisorption and chemisorption behave differently with rise in temperature?
Which of the following statements is not true about physisorption?
