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← ScienceWhich outcome reduces catalytic efficiency when molecules adsorb?
A)Orbital symmetry mismatch destabilizes intermediates✓
B)Transition state energy barrier decreases
C)Diffusion limitation of reactant molecules
D)Faster desorption products reduce surface coverage
💡 Explanation
A catalytic mechanism relies on matched orbitals stabilizing adsorbed reactants, but an orbital mismatch increases activation energy because the transition state cannot be efficiently reached, therefore reducing catalytic activity rather than increasing it through other effects.
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