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प्रश्न
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
विकल्प
decrease in temperature
increase in temperature
increase in surface area of adsorbent
decrease in surface area of adsorbent
उत्तर
Physical adsorption of a gaseous species may change to chemical adsorption with increase in temperature.
Explanation:
On increasing temperature physisorption changes to chemisorption. As the temperature increases, energy of activation of adsorbate particles increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
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संबंधित प्रश्न
Write the differences between physisorption and chemisorption with respect to the following:
(i) Specificity
(ii) Temperature dependence
(iii) Reversibility and
(iv) Enthalpy change
What is the effect of temperature on chemisorption ?
Write one similarity between Physisorption and Chemisorption
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
How does chemisorption vary with temperature?
Adsorption increases when ____________.
Which among the following is a property of physisorption?
Which among the following is true for chemisorption?
Which of the following is not a favourable condition for physical adsorption?
What is the role of diffusion in heterogenous catalysis?
