Which outcome occurs when catalyst surface area decreases in a heterogenous catalytic reactor for a first-order reaction?

💡 Explanation

When catalyst surface area lowers, proportionally fewer active sites are available for reactant adsorption because the reaction rate depends directly on the number of active sites in the catalyst, impeding adsorption. Therefore the reaction rate decreases proportionally, rather than altering equilibrium, reducing activation energy (catalyst property), or changing the reaction order, which depend on intrinsic chemical properties.

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