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← ScienceWhich mechanism causes a platinum catalyst to increase reaction rate?
A)Lowering the activation energy barrier✓
B)Shifting equilibrium toward reactants
C)Increasing reactant kinetic energy input
D)Raising the product molar entropy
💡 Explanation
A platinum catalyst speeds up the reaction rate by lowering the activation energy barrier for the reaction via surface adsorption, therefore the reactants require less energy to transition to products, rather than altering equilibrium or kinetic energy requirements.
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