Collision Theory Rate Expression (k = P Z e^{-Ea/(RT)})
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k = P Z e^{-Ea/(RT)}
What each symbol means
| Symbol | What it stands for |
|---|---|
| P | Steric/orientation probability factor (0–1) |
| Z | Collision frequency factor (depends on T, σ, μ) |
| E_a | Activation energy |
| R, T | Gas constant, kelvin temperature |
When to use this
Qualitative: successful collisions ∝ collisions × Boltzmann factor. Z ∝ √T for bimolecular hard-sphere model.