Arrhenius Equation Calculator
What reaction rate constant follows from activation energy and temperature? Enter the stated values to calculate this model.
Reference calculation or estimate for example inputs; assumptions and limitations apply.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Preexponential factor (rate unit) | Enter preexponential factor in rate unit; use the same basis as the other measurements. |
| Activation energy (J/mol) | Enter activation energy in J/mol; use the same basis as the other measurements. |
| Absolute temperature (K) | Enter absolute temperature in K; use the same basis as the other measurements. |
Understanding your result
The result is a scientific reference calculation under the model assumptions on this page. It does not assess hazards, chemical compatibility, purity, solubility, equipment limits or clinical meaning.
Common mistakes
- Using solvent volume in place of final solution volume, or mass concentration in place of molar concentration.
- Ignoring units, reaction coefficients, activity assumptions or the stated temperature/model limits.
Check your calculation
- Check the units and balance/coefficients against the worked example. For real laboratory work, verify SDS information and the applicable procedure independently.
Calculation checks, sources and review limits
What reaction rate constant follows from activation energy and temperature?
What reaction rate constant follows from activation energy and temperature? Enter the stated values to calculate this model.
Common uses
- What reaction rate constant follows from activation energy and temperature
How it works
Multiply the stated pre-exponential factor by exp(−activation energy ÷ (gas constant × absolute temperature)). Temperature is in kelvin and energy units must match the stated gas constant.
Worked example
Enter Preexponential factor: 1000 rate unit; Activation energy: 0 J/mol; Absolute temperature: 300 K. Results: Rate constant: 1000 rate unit.