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← ScienceWhich outcome results when sustained ignition failure occurs within catalytic converters?
A)Catalyst overheating and thermal runaway✓
B)Increased nitrogen oxide formation efficiency
C)Decreased carbon monoxide reaction rate
D)Enhanced platinum particle surface area
💡 Explanation
Reduced heat dissipation causes catalyst overheating and eventual thermal runaway of exothermic reactions because runaway accelerates exponentially with temperature due to the Arrhenius equation; therefore, thermal runaway happens rather than reactions slowing, because a large active surface area lowers activation energy.
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