General Form
The general form of the Eyring–Polanyi equation somewhat resembles the Arrhenius equation:
where ΔG‡ is the Gibbs energy of activation, kB is Boltzmann's constant, and h is Planck's constant.
It can be rewritten as:
To find the linear form of the Eyring-Polanyi equation:
where:
- = reaction rate constant
- = absolute temperature
- = enthalpy of activation
- = gas constant
- = Boltzmann constant
- = Planck's constant
- = entropy of activation
A certain chemical reaction is performed at different temperatures and the reaction rate is determined. The plot of versus gives a straight line with slope from which the enthalpy of activation can be derived and with intercept from which the entropy of activation is derived.
Read more about this topic: Eyring Equation
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