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← ScienceWhich outcome increases greatly when catalytic converters cool?
A)Harmful pollutant emissions increase rapidly✓
B)Noble metal catalyst activity increases
C)Complete combustion of fuel happens faster
D)Hydrocarbon conversion achieves completion state
💡 Explanation
Reduced temperature lowers reaction rate because the Arrhenius equation dictates that reaction rate is exponentially dependent on temperature; therefore, pollutant emissions increase, rather than noble metal catalysts functioning or more completely combusting fuel at low temperature within the constraints given.
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