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Which mechanism causes increased product formation rate in a catalytic converter exposed to elevated exhaust temperatures?

A)Increased catalyst surface area sintering
B)Enhanced reactant adsorption on catalyst
C)Decreased catalyst effectiveness from fouling
D)Reduced activation energy for side reactions

💡 Explanation

When exhaust temperatures rise, reactants gain kinetic energy enabling greater adsorption onto the catalyst surface site because the rate of adsorption is thermally activated, accelerating desired reactions. Therefore enhanced reactant adsorption results, rather than decreased effectiveness, sintering or side reactions, which require different catalyst degradation processes.

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