In the Arrhenius equation, the pre-exponential factor A is also called:
ABoltzmann constant
BHalf-life
CFrequency factor (or pre-exponential factor)
DActivation energy
Answer & Solution
Correct answer: C. Frequency factor (or pre-exponential factor)
**A** = the **frequency factor** (or pre-exponential factor). It represents the rate of collisions with proper orientation (the limit of k as E_a → 0). Specific to each reaction; independent of temperature.
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