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← ScienceWhich outcome results when the Arrhenius equation's pre-exponential factor is significantly increased in catalytic converter design?
A)Increased light-off temperature during cold starts
B)Reduced catalyst poisoning from sulfur compounds
C)Higher conversion efficiency at lower temperatures✓
D)Increased backpressure due to smaller pore size
💡 Explanation
When the pre-exponential factor (A) in the Arrhenius equation is increased, surface reaction rate on the catalytic converter increases because there are more frequent effective collisions between reactants and the catalytic surface, thereby lowering activation energy requirements. Therefore a higher conversion efficiency at lower temperatures results, rather than a higher light-off temperature poisoning reduction, or increased backpressure, all of which arise from different changes.
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