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← ScienceWhich outcome occurs when catalyst thermal energy input decreases?
A)Reduced reaction rate constant occurs✓
B)Faster reaction shifts product equilibrium
C)Activated complex energy barrier increases
D)Increased enzyme active site affinity
💡 Explanation
A reduced thermal energy input lowers reactant molecule kinetic energy which in turn slows their motion. The Arrhenius equation defines how temperature affects reaction rate constant, and thus overall reaction rate is lowered because fewer molecules possess sufficient activation energy; therefore, reaction rate decreases rather than increases or changes in product equilibrium.
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