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Which consequence results when iron rusting catalyst surface-area decreases?

A)Corrosion rate asymptotically trends zero
B)Activation energy threshold increases
C)Electrode potential difference increases
D)Equilibrium constant shifts unfavorably

💡 Explanation

Decreasing the catalyst surface area diminishes available sites for accelerating corrosion through surface catalysis; because the rate determining step slows down, therefore the corrosion rate decreases asymptotically towards zero, rather than affecting activation thresholds.

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