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← ScienceWhich outcome limits a catalytic converter's efficiency given fixed rate constants?
A)Catalyst surface area decreases over time
B)Temperature maintenance becomes thermodynamically unfeasible
C)Equilibrium shifts due to product accumulation✓
D)Precious metal oxidation surpasses reduction rates
💡 Explanation
Equilibrium shifts toward reactants due to product build-up, slowing the net reaction rate. Le Chatelier's principle dominates; therefore, even if the rate constants are unchanged, the overall conversion decreases rather than achieving full conversion, because products inhibit the reaction.
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