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← ScienceWhich outcome occurs when inadequate catalyst surface area limits catalytic converter efficiency?
A)Increased exhaust back pressure results
B)Reaction rates plateau prematurely✓
C)Soot formation within the core increases
D)Selective catalytic reduction (SCR) fails
💡 Explanation
Reaction rates plateau when there is insufficient surface area, because adsorption limits catalytic activity. The Langmuir-Hinshelwood mechanism dictates surface adsorption precedes reaction; therefore, the overall exhaust conversion efficiency suffers, rather than pressure changes or SCR failures, given catalyst quantity is already fixed.
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