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← ScienceWhich risk increases when a catalytic converter reaches maximum oxygen storage capacity?
A)Sulfur poisoning increases exponentially
B)Platinum catalyst surface area decreases
C)Uncombusted hydrocarbons exceed ideal rates✓
D)Vanadium pentoxide decomposition accelerates
💡 Explanation
Increased oxygen saturation inhibits oxidation reactions because the **Langmuir-Hinshelwood mechanism** relies on active site availability; therefore, uncombusted hydrocarbon emissions overwhelm oxidation rates, rather than accelerated catalyst degradation or poisoning which are thermally-driven failures
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