Question

Which of the following statements is incorrect about the collision theory of chemical reaction?

• A. It considers reacting molecules or atoms to be hard spheres and ignores their structural features
• B. Number of effective collisions determines the rate of reaction
• C. Collision of atoms or molecules possessing sufficient threshold energy results into the product formation
• D. Molecules should collide with sufficient threshold energy and proper orientation for the collision to be effective

Answer 1

The correct option is C Collision of atoms or molecules possessing sufficient threshold energy results into the product formation

The collisions in which molecules collide with sufficient kinetic energy (called threshold energy) and proper orientation, so as to facilitate breaking of bonds between reacting species and formation of new bonds to form products are called as effective collisions.

In collision theory activation energy and proper orientation of the molecules together determine the criteria for an effective collision and hence the rate of a chemical reaction.
Option C is not a correct statement.
Ans-Option C.