Rate of a reaction can be expressed by Arrhenius equation as:
`k = Ae^(-E_(a)//RT)`
In this equation, `E_(a)` represents:

Options

A. the fraction of molecules with energy greater than the activation energy of the reaction.
B. the total energy of the reacting molecules at a temperature, T
C. the energy below which colliding molecules will not react
D. the energy above which all the coliding molecules will react

Answer

C

Explanation

`E_(0)` is energy of activation, the energy required to form activated complex let or transition state.Thus, below this energy, colliding molecules will react.