question_answer 54)

  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:

                  (c) According the postulates of collision theory there are following necessary conditions for any reaction to be occur (i) Molecule should collide with sufficient threshold energy. (ii) Their orientation must be proper. (iii) The collision must be effective.