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sci.activation-energy-two-temps Calculator
Calculates activation energy from rate constants at two temperatures using the Arrhenius relationship k = A·exp(−Ea/RT). Higher activation energy means a steeper temperature dependence — enzymatic reactions have low apparent Ea due to the enzyme stabilising the transition state.
Inputs
Rate K1
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Rate K2
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Temp1 C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Temp2 C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Results
activation energy Ea (kJ/mol)
The value at the specified point or condition.
Ea (J/mol)
Reference formula or conversion factor shown for context.
frequency factor A estimate
A dimensionless multiplier applied in the calculation.