Substances which accelerate the rate of chemical reaction and themselves remain chemically and quantitatively unchanged after

Question

Substances which accelerate the rate of chemical reaction and themselves remain chemically and quantitatively unchanged after the reaction are known as catalysts The catalytic activity is localized on the surface of the catalyst The mechanism involves the following five steps Not in the order 1 Occurrence of the chemical reaction on the catalyst s surface through the formation of an intermediate II Desorption of reaction products from the catalyst surface III Adsorption of reactant molecules on the surface of the catalyst IV Diffusion of reaction products away from the catalyst s surface V Diffusion of reactant to the surface of the catalyst The correct order of sequence of the above steps to carry out a catalytic process should be V III 1 IV II V III 1 11 IV III V 1 IV II III 1 11 IV

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