JEE Main Chemistry question

Not in JEE Main or NEET syllabus

According to the adsorption theory of catalysis, the speed of the reaction increases because

(A)The concentration of reactant molecules at the active centres of the catalyst becomes high due to adsorptionCorrect
(B)In the process of adsorption, the activation energy of the molecules becomes large
(C)Adsorption produces heat which increases the speed of the reaction
(D)Adsorption lowers the activation energy of the reaction

Answer: (A)

Solution

According to the adsorption theory of heterogeneous catalysis, reactant gas molecules are adsorbed onto the active centres of the catalyst surface, which effectively concentrates them in a small region and brings them into closer proximity/favourable

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Question ID VK-144861