🧪 Chemistry · Chemical Kinetics · NEET & JEE

In collision theory, the fraction of molecules possessing energy equal to or greater than the activation energy is represented by the term:

Answer: e^-Ea/RT.

A e^-Ea/RT
B e^Ea/RT
C Ea/RT
D RT/Ea

Correct answer: A. e^-Ea/RT

Explanation: The Boltzmann factor e^-Ea/RT gives the fraction of colliding molecules with energy at least equal to the activation energy Ea.

First-order decay curve: concentration halves every t½, and that half-life is constant - a defining test for first-order kinetics.

Concept context

Study the speed of reactions and what affects it: concentration, temperature, and catalysts. Covers rate law, order of reaction, the Arrhenius equation, and reaction mechanisms step by step.

Read the full Chemical Kinetics notes →

In collision theory, the fraction of molecules possessing energy equal to or greater than the activation energy is represented by the term:

Concept context

More Chemical Kinetics questions