Assertion : In chemisorption,adsorption first | vedclass

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(C) In chemisorption,adsorption involves the formation of chemical bonds between the adsorbate and the adsorbent,which requires an initial activation

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If the Assertion is correct but Reason is incorrect.

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(C) In chemisorption,adsorption involves the formation of chemical bonds between the adsorbate and the adsorbent,which requires an initial activation energy.Initially,as temperature increases,more molecules gain sufficient energy to overcome this activation barrier,leading to an increase in adsorption.However,once the chemical bonds are formed,the process is typically exothermic. According to Le Chatelier's principle,an increase in temperature at higher values favors the reverse (desorption) process,causing adsorption to decrease.Therefore,the Assertion is correct,but the Reason is incorrect because heat does not provide 'more and more' activation energy indefinitely; rather,it facilitates the initial bond formation,and excessive heat eventually destabilizes the formed bonds.

Assertion : In chemisorption,adsorption first increases with temperature and then decreases.
Reason : Heat keeps on providing more and more activation energy.

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Assertion : In chemisorption,adsorption first increases with temperature and then decreases.Reason : Heat keeps on providing more and more activation energy.