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Which effect occurs when platinum catalysts reach equilibrium?

A)Reaction rate plateau
B)Increased side product formation
C)Enhanced substrate selectivity
D)Decreased catalyst surface area

💡 Explanation

Reaction rates reach a plateau because adsorption-desorption processes on the catalyst surface achieve a steady state, resulting in no net change from the dynamic equilibrium, therefore the catalytic activity stabilizes rather than showing continued exponential rate increases or declines.

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