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Which outcome reduces hydrocarbon yield when platinum catalysts degrade?

A)Decreased active metal surface area
B)Enhanced exothermic reaction equilibrium
C)Increased reactant adsorption strength
D)Improved catalyst pore diffusion rate

💡 Explanation

A decrease in active metal surface area inhibits catalysis because the reaction rate drops according to the Sabatier principle; therefore, the number of active sites decreases on degraded catalysts rather than enhanced performance from increased reactant adsorption.

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