Activation Energy from Reaction Rates

Calculate activation energy Ea using the Arrhenius equation by fitting rate constants at two or more temperatures: ln(k2/k1) = -Ea/R * (1/T2 - 1/T1).

 
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Physical Constants Reference
ConstantSymbolValue
Speed of lightc2.99792458×10⁸
Planck's constanth6.62607015×10⁻³‴
Boltzmann constant1.380649×10⁻²³
Avogadro's numberNₐ6.02214076×10²³
Gravitational constantG6.6743×10⁻¹¹
Gas constantR8.31446
Elementary chargee1.602176634×10⁻¹⁹
Electron massmₑ9.1093837015×10⁻³¹
Proton massmₚ1.67262192369×10⁻²⁷
Fine-structure constantα7.2973525693×10⁻³
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How It Works

Calculate activation energy Ea using the Arrhenius equation by fitting rate constants at two or more temperatures: ln(k2/k1) = -Ea/R * (1/T2 - 1/T1)

Each component has a specific meaning:

  • Arrhenius equation by fitting rate constants at two or more temperatures: ln = -Ea/R * — The arrhenius equation by fitting rate constants at two or more temperatures: ln = -ea/r * recorded for the patient or scenario being assessed.

Note: Interpret the activation energy result against the clinical thresholds and context described above.

How to Use

Enter the Arrhenius equation by fitting rate constants at two or more temperatures: ln = -Ea/R * for the patient or scenario you are assessing. Calculate activation energy Ea using the Arrhenius equation by fitting rate constants at two or more temperatures: ln(k2/k1) = -Ea/R * (1/T2 - 1/T1). Use the activation energy result to inform your clinical assessment.

Frequently Asked Questions