Easily calculate the activation energy (Ea) required for a chemical reaction using our free online tool. Understand how temperature impacts reaction rates with the Arrhenius equation. Perfect for chemistry students and professionals.
Formula:
Activation Energy Formula
The activation energy (Ea) can be calculated using the two-point Arrhenius equation:
Ea = -R × [ln(k2/k1) / ((1/T2) - (1/T1))]
Where:
- Ea = Activation Energy (Joules per mole, J/mol)
- R = Ideal Gas Constant (8.314 J/(mol·K))
- k1 = Rate constant at temperature T1 (e.g., s-1, M-1s-1)
- k2 = Rate constant at temperature T2 (e.g., s-1, M-1s-1)
- T1 = Absolute Temperature 1 (Kelvin)
- T2 = Absolute Temperature 2 (Kelvin)