Question

According to the collision theory of reaction rates, the rate of reaction increases with temperature due to:

• A. greater number of collisions
• B. higher velocity of reacting molecules
• C. greater number of molecules having the activation energy
• D. decrease in the activation energy

Answer 1

The correct option is C greater number of molecules having the activation energy

By Arrhenius equation we know that fraction of molecule having enough activation energy = $e^{\frac{{-E}_A}{RT}}$ Now as the temperature increases this fraction increases, hence there are a greater number of molecules having enough activation energy; thus the rate of reaction increases.