Arrhenius Rate Constant Calculator

k₂ from k₁, Eₐ, T₁, T₂

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Arrhenius Rate Constant

k₂ from k₁, Eₐ, T₁, T₂

$$k_2=k_1\exp\!\left[-\frac{E_a}{R}\!\left(\frac{1}{T_2}-\frac{1}{T_1}\right)\right]$$

$R=8.314\ \text{J/mol·K}$. 10°C rise roughly doubles $k$ for $E_a\approx50{-}80\ \text{kJ/mol}$.

k₁

Eₐ (J/mol)

T₁ (K)

T₂ (K)

All fields required; T₁ and T₂ nonzero.

Rate Constant k₂

—same units as k₁

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