Calculates the rate constant of a chemical reaction using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and pre-exponential factor.
Start with your values, or try a preset.
Enter Activation Energy (Ea), Temperature (T), Pre-exponential Factor (A), and Gas Constant (R) in the units shown.
Read Rate Constant (k) in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Activation Energy (Ea): 50,000 J/mol; Temperature (T): 298 K; Pre-exponential Factor (A): 10,000,000,000 Units depend on reaction order; Gas Constant (R): 8.314 J/(mol·K)
Rate Constant (k): 17.19816531 Units depend on reaction order
Activation Energy (Ea): 100,000 J/mol; Temperature (T): 300 K; Pre-exponential Factor (A): 10,000,000,000 Units depend on reaction order; Gas Constant (R): 8.314 J/(mol·K)
Rate Constant (k): 0.00000003871011635 Units depend on reaction order
Activation Energy (Ea): 20,000 J/mol; Temperature (T): 300 K; Pre-exponential Factor (A): 10,000,000,000 Units depend on reaction order; Gas Constant (R): 8.314 J/(mol·K)
Rate Constant (k): 3,292,796.529 Units depend on reaction order
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