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Question

Physical adsorption of a gaseous species may change to chemical adsorption with:


A
decrease in temperature
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B
increase in temperature
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C
increase in surface area of adsorbent
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D
decrease in surface area of adsorbent
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Solution

The correct option is A increase in temperature
Physical adsorption of a gaseous species may change to chemical adsorption with increase in temperature.
As temperature increases, the energy possessed by reactant molecules increases. At a certain temperature, this energy becomes greater than or equal to the activation energy. This results in the formation of a chemical bond.

Chemistry

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