Chemical KineticsmediumMCQ SINGLE⭐ Must-Do

According to the Arrhenius equation , under what theoretical physical condition will the experimentaChemical Kinetics Chemistry Question

Question

According to the Arrhenius equation $k = A e^{-E_a/RT}$, under what theoretical physical condition will the experimental rate constant $k$ become exactly equal to the pre-exponential factor $A$?

Answer: D

💡 Solution & Explanation

The Boltzmann factor $e^{-E_a/RT}$ bounds the kinetic probability. As temperature $T \rightarrow \infty$, the exponent fraction collapses to $0$. Since $e^0 = 1$, the rate constant $k$ maximizes and becomes algebraically equal to the frequency factor $A$.

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