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← ScienceWhich effect results when platinum catalyzes hydrogenation reaction's intermediates?
A)Lower activation energy barrier occurs✓
B)Increased reaction equilibrium constant
C)Decreased reactant molecules collisions occur
D)Higher stoichiometric reaction enthalpy
💡 Explanation
Lower activation energy results from platinum providing a surface for adsorption via heterogeneous catalysis, because providing an alternate mechanism stabilizes transition state intermediate. This allows faster reaction rates; therefore, energy input is reduced rather than changing equilibrium or number of collisions.
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