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

Options

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

Answer

A

Explanation

According to adsorption theory of catalysis, the speed (rate) of reaction increases because adsorption lower the activation energy of the reaction.
`because` Rate of reaction `prop (1)/("activation energy")`