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प्रश्न
Discuss the effect of temperature on the adsorption of gases on solids.
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उत्तर
Adsorption is generally exothermic; hence, increasing temperature decreases adsorption. In physical adsorption, a rise in temperature weakens van der Waals forces, lowering adsorption. For chemical adsorption, it first increases with temperature due to activation energy requirements, then decreases at higher temperatures as desorption dominates. Thus, the effect of temperature depends on the type of adsorption.
संबंधित प्रश्न
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
Why is adsorption always exothermic?
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 the compound is formed.
Which of the following is true about chemisorption?
Adsorption increases when ____________.
Which among the following is true for chemisorption?
The physical adsorption is due to ____________.
Extent of physisorption of a gas increases with ______.
What is the role of activated charcoal in gas mask used in coal mines?
Which among the following is a false statement?
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:-
Write three differences between physisorption and chemisorption.
Which of the following statements is not true about physisorption?
