[adsorption lowers the act...] According to adsorption theory of catalysis, the speed of the reaction increases because:

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

adsorption produces heat which increases the speed of the reaction.

in the process of adsorption, the activation energy of the molecules becomes large.

the concentration of the reactant molecules at the active centres of the catalyst becomes high due to adsorption.

adsorption lowers the activation energy of the reaction.

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