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← ScienceWhich risk during platinum catalyst use, lowers efficiency?
A)Inhibition blocks active catalyst sites✓
B)Acceleration increases reaction uncontrollably
C)Deactivation shifts equilibrium unfavorably
D)Over-oxidation consumes precious reactant
💡 Explanation
In catalyst poisoning, inhibition occurs because the inhibiting substance binds to the catalyst's active sites, blocking reactants. Therefore, desired reactions slow dramatically, rather than accelerate or shift. Over-oxidation is avoided as the catalyst remains unchanged.
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