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← ScienceWhich outcome occurs when an oxidation catalyst loses surface area?
A)Lower overall reaction conversion efficiency✓
B)Increased average exhaust gas temperature
C)Decreased activation energy needed
D)Higher equilibrium partial-pressure of reactants
💡 Explanation
Lower surface area reduces available active sites; because chemisorption scales directly with catalyst area, the oxidation reaction rate decreases. This is due to decreased active sites rather than a higher needed activation energy and lowers catalytic conversion, therefore reactions stall, rather than going to completion.
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