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प्रश्न
Extent of physisorption of a gas increases with ______.
विकल्प
increase in temperature.
decrease in temperature.
decrease in surface area of adsorbent.
decrease in strength of van der Waals forces.
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उत्तर
Extent of physisorption of a gas increases with decrease in temperature.
Explanation:
As the process of adsorption is an exothermic one; physical adsorption occurs readily at low temperature and decreases with an increase in the temperature as equilibrium shifts in the backward direction. This is known as Le-Chatelier's principle.
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संबंधित प्रश्न
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
Differentiate between adsorbtion and absorption.
Why is adsorption always exothermic?
What is the difference between physisorption and chemisorption?
Discuss the effect of temperature on the adsorption of gases on solids.
Write one similarity between Physisorption and Chemisorption
Physisorption is reversible while chemisorption is irreversible. Why ?
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
Which of the following compounds is formed when tungsten adsorbs oxygen gas?
Which of the following is an example of physisorption?
Which of the following is true about chemisorption?
Which among the following is a property of physisorption?
Which among the following is true for chemisorption?
Chromatography is based on the principle of ____________.
The physical adsorption is due to ____________.
What is the role of activated charcoal in gas mask used in coal mines?
Give an example where physisorption changes to chemisorption with rise in temperature. Explain the reason for change.
Which among the following is a false statement?
Which of the following statements is incorrect regarding physisorptions?
