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← ScienceWhich outcome results when a platinum catalyst complex degrades in a packed bed reactor?
A)Conversion rate decreases exponentially✓
B)Selectivity shifts to heavier products
C)Equilibrium constant rapidly increases
D)Mean product molecular weight decreases
💡 Explanation
The activity is reduced; catalyst degradation lowers active surface area, impacting the reaction rate via decreased activity. The *Arrhenius equation* dependence of rate constant on temperature dictates that conversion diminishes, because the degradation reduces the pre-exponential factor rather than selectivity at a given temp.
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