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← ScienceWhich process increases when a lower catalyst concentration is used?
A)Reaction activation energy requirement✓
B)Kinetic isotope effect expression
C)Rate-determining step involvement
D)Catalyst complex intermediate formation
💡 Explanation
A lower catalyst concentration raises the reaction's activation energy because the reactants struggle to overcome the energy barrier via the reduced catalytic surface area, therefore increasing activation energy requirements rather than favoring a kinetic effect that depends on isotope mass.
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