Activation energy from two (k, T) points

Ea from ln(k₂/k₁) and two temperatures.

Calculator

Model / formula

ln(k₂/k₁) = −Ea/R (1/T₂ − 1/T₁) — two (k,T) measurements

k₁

T₁ (K)

k₂

T₂ (K)

Result

Ea = -91.8948 kJ/mol

$$\ln\frac{k_2}{k_1} = -\frac{E_a}{R}\left(\frac{1}{T_2}-\frac{1}{T_1}\right)$$

Educational use only. Double-check values for labs, homework, and exams.