Reaction Kinetics Calculator

Calculate Arrhenius rate constants and integrated rate-law half-lives from user-supplied kinetic parameters.

V2 · Transparent calculation method

V2 uses the Arrhenius equation with parameters you provide. It does not infer activation energy from reactant or product SMILES.

k = A exp(−Ea/RT)

Reaction Kinetics Results

Rate Constant (k)
Half-life (t₁/₂)
Activation Energy (Ea)
Rate Law
Method versionreaction-kinetics-2.0

Assumptions and limitations

  • k = A exp(−Ea/RT)
  • V2 uses the Arrhenius equation with parameters you provide. It does not infer activation energy from reactant or product SMILES.

Method, source and limitations

Method version: arrhenius-2.0
Calculation method
Arrhenius rate constant plus the integrated zero-, first-, or second-order rate law.
Data source
k = A exp(−Ea/RT) using user-supplied model parameters.
Assumptions and limitations
Does not infer mechanism, activation energy, solvent, catalyst, or mass-transfer effects.
Verification example
Supply A, Ea, temperature, order, and initial concentration to simulate concentration over time.

Educational Model · Last validated: 2026-07-28

Result guidance

How does this tool calculate the result?

Arrhenius rate constant plus the integrated zero-, first-, or second-order rate law.

How should I interpret the result?

Does not infer mechanism, activation energy, solvent, catalyst, or mass-transfer effects.

How can I verify the result?

Supply A, Ea, temperature, order, and initial concentration to simulate concentration over time.