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← ScienceWhich outcome increases within nickel-catalyzed hydrogenation, given deactivated catalyst?
A)Increased observed activation energy✓
B)Enhanced product thermodynamic stability
C)Modified equilibrium rate constant
D)Reduced mass transport limitations
💡 Explanation
In deactivated nickel catalysts, adsorbed reactants exhibit hindered surface interactions causing increased apparent energetic hurdle to reach transition state; therefore, experimentally observed activation energy rises because increased energy is required, rather than differing equilibrium constants or altering intrinsic thermodynamic parameters.
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