Free Rate Constant Calculator
Calculate the rate constant (k) at a given temperature from the activation energy and pre-exponential factor using the Arrhenius equation k = Ae^(-Ea/RT).
J/mol
K
Rate Constant (k)
17.1982
Rate Constant (k) vs Pre-exponential Factor (A)
Arrhenius Equation
Formula
k = A × e^(−Ea / RT)
Where:
The rate constant increases exponentially with temperature and decreases with higher activation energy.
Example Calculation
A = 1 × 10¹⁰, Ea = 50,000 J/mol, T = 298 K.
- 01k = A × e^(-Ea/RT)
- 02k = 1×10¹⁰ × e^(-50000/(8.314×298))
- 03k = 1×10¹⁰ × e^(-20.18)
- 04k = 1×10¹⁰ × 1.71×10⁻⁹
- 05k = 17.1
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