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← ScienceWhich outcome occurs when reactor catalysts degrade unexpectedly?
A)Reduced reaction yield per unit time✓
B)Increased downstream product separation load
C)Elevated overall system energy efficiency
D)Enhancement of catalytic reaction selectivity
💡 Explanation
Degraded catalyst lowers active surface area; the *rate of reaction* decreases because fewer molecules react with the catalyst per unit time. Therefore, yield drops rather than increasing downstream load or selectivity because the mass action is limited.
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