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Which 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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