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

Answer

C

Explanation

In the Arrhenius equation for the rate of reaction, E is the energy below which colliding molecules will not react.