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← ScienceWhich consequence results when the pre-exponential factor in the Arrhenius equation diminishes for platinum catalytic converters?
A)Increased CO oxidation onset temperature✓
B)Lower N₂O formation during catalysis
C)Deactivation due to sulfur poisoning
D)Enhanced conversion across all temperatures
💡 Explanation
Elevated temperatures result from decreased reaction frequency factors because diminished active sites limit successful collisions; therefore, higher temps are required to maintain conversion rates rather than lower N₂O, which relates to selectivity influencing other reaction characteristics.
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