Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Chemical Kinetics

Question:

Why must the reacting molecules have a minimum energy for an effective collision?

Options:

minimum energy is required for the particles to collide many times per second

to facilitate breaking of bonds and bond formation

the reaction mixture has sufficient energy to give off heat in a reaction

minimum energy is required to orient the particles correctly

Correct Answer:

to facilitate breaking of bonds and bond formation

Explanation:

The correct answer is Option (2) → to facilitate breaking of bonds and bond formation

The minimum energy requirement in a chemical reaction is related to the activation energy (Ea).

  • For a collision to be effective, molecules must have enough energy to break existing bonds and form new bonds.
  • Collisions without sufficient energy do not lead to a reaction.