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← ScienceWhich behavior alters the rate constant disproportionately at higher temperatures?
A)Reversible reaction path switching
B)Differential reagent consumption rates
C)Vibrational mode anharmonicity domination✓
D)Increased Maxwell-Boltzmann distribution tail
💡 Explanation
Vibrational mode anharmonicity dominates because high energy collisions excite higher vibrational modes leading to bond breaking, thus changing molecular structures and potential energy surfaces; therefore, the rate constant increases faster, rather than conforming to simple exponential temperature dependence predicted in the Arrhenius equation.
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