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← ScienceWhich outcome occurs when a catalyst deactivates during a continuous chemical reaction at steady temperature?
A)Reaction rate declines over time✓
B)Equilibrium constant shifts unexpectedly
C)Activation energy suddenly stabilizes
D)Heat of reaction undergoes dampening
💡 Explanation
When a catalyst deactivates, the number of active sites available for the reaction decreases, causing a reduction in the overall reaction rate because it slows down interactions. Therefore rate declines, rather than equilibrium shifts, or activation energy stabilization which rely on altering thermochemical properties.
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