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Enzyme catalysis - class-XI

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According to the adsorption theory of catalysis, the rate of reaction increases with the use of a catalyst because:

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the concentration of reactants at the active centers becomes high due to adsorption the rate of reaction
💡 Explanation:

Adsorption theory of Heterogeneous catalysis involves five steps-

  • Diffusion of reactants to the surface of the catalyst.
  • Adsorption of reactant molecules on the surface of the catalyst. (Occurrence of chemical reaction on the catalyst’s surface through formation of an intermediate.
  •  Desorption of reaction products from the catalyst surface, and thereby,  making the surface available again for more reaction to occur.
  •  Diffusion of reaction products away from the catalyst’s surface.
  • So, we can deduce from Adsorption theory of catalysis that as the concentration of reactants at active centers increases due to adsorption and thus the rate of the reaction is also increased.

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