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← ScienceWhich outcome occurs when a platinum catalyst reaches effective saturation coverage in a catalytic converter?
A)Reaction rate becomes zero order✓
B)Activation energy decreases exponentially
C)Equilibrium shifts toward reactants
D)Catalyst structural degradation accelerates
💡 Explanation
The reaction proceeds independent from reactant concentration, because 'surface saturation' now limits available catalyst, therefore rate becomes zero order rather than first or second and activation energy is unchanged.
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