Q. According to adsorption theory of catalysis, the speed of the reaction increases because
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(A)
the concentration of the reactant molecules at the active centres of the catalyst becomes high due to adsorption.
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(B)
in the process of adsoption, the activation energy of the molecules becomes large.
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(C)
adsorption produces heat which increases the speed of the reaction.
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(D)
adsorption lowers the activation energy of the reaction.
β
Correct Answer: (D)
adsorption lowers the activation energy of the reaction.