Advertisements
Advertisements
Question
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
Options
decrease in temperature
increase in temperature
increase in surface area of adsorbent
decrease in surface area of adsorbent
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Write the differences between physisorption and chemisorption with respect to the following:
(i) Specificity
(ii) Temperature dependence
(iii) Reversibility and
(iv) Enthalpy change
Why is adsorption always exothermic?
Give reason why a finely divided substance is more effective as an adsorbent.
How does chemisorption vary with temperature?
Answer in one sentence:
Name type of adsorption in which the compound is formed.
Which of the following compounds is formed when tungsten adsorbs oxygen gas?
Which of the following is an example of physisorption?
Which among the following is a property of physisorption?
Which among the following is true for chemisorption?
The extent of adsorption increases with the ____________.
Extent of physisorption of a gas increases with ______.
Which of the following is not a favourable condition for physical adsorption?
Why is it important to have clean surface in surface studies?
Which among the following is a false statement?
Rate of physisorption increase with:-
Chromatography is based on:-
Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4.
Reason R : Gases with lower critical temperatures are readily adsorbed by activated charcoal.
In light of the above statements, choose the correct answer from the options given below.
Which of the following statements is incorrect regarding physisorptions?
