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← ScienceWhich outcome impairs rate control in catalytic converters?
A)Active site surface area decline✓
B)Substrate concentration nearing saturation
C)Excessive reactor wall temperature
D)Product inhibition reversal dominance
💡 Explanation
Decreased active site surface area impacts reaction rate because fewer substrate molecules interact with the catalyst through adsorption. This changes reaction kinetics; therefore, this impairs rate control rather than a single event like elevated temperatures or reversal, which respond differently.
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