Question

Rate of reaction can be expressed by Arrhenius equation as $k=A{e}^{-Ea/RT}$. In this equation $E_a$ represents.

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

Answer 1

The correct option is A The energy above which all the colliding molecules will react

By definition, activation energy is the energy required by molecules to react. so, $E_a$ represents the energy below which colliding molecules will not react.