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Which outcome occurs when precious metal catalysts embedded within an automotive catalytic converter reach their operating temperature?

A)Increased vibrational mode energy transfer
B)Decreased exhaust gas oxygen concentration
C)Enhanced catalyst surface-area poisoning
D)Reduced noble metal catalytic cracking

💡 Explanation

Increased vibrational mode energy transfer arises as catalyst temperature climbs. This enhancement occurs because increased temperature allows gas-phase reactants to overcome the activation-energy barrier via thermal energy, and adsorb onto the catalyst for reaction. Therefore products form more rapidly rather than equilibrium being limiting.

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