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← ScienceWhich consequence increases when an oxidation catalyst's support weakens?
A)Increased catalyst poisoning probability✓
B)Reaction selectivity becomes stable
C)The equilibrium constant increases slightly
D)Activation energy magnitude will drop
💡 Explanation
Catalyst support weakening exposes more active sites to potential contaminants; this introduces a higher likelihood of catalyst poisoning because contaminant molecules adsorb and block active surface sites, therefore activity is reduced, rather than increased reaction rates or a change in constant.
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