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← ScienceWhich consequence results when catalyst active sites become blocked?
A)Reaction rate decreases dramatically✓
B)Activation energy unexpectedly decreases
C)Equilibrium shifts towards reactants
D)The reaction becomes more exothermic
💡 Explanation
When active sites are blocked, surface area diminishes, inhibiting reactant adsorption, and therefore the amount of product formed drops because the reduction in surface sites decreases reaction rate rather than increasing it; alternative products or pathways aren't necessarily altered.
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