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

d part is incorrect in above statement

Answer 2

Answer:

Option C

Explanation:

Collision theory, is the theory  used to predict the rates of chemical reactions, particularly for the gases. The theory is based on the assumption that for a reaction to occur it is always necessary for the reacting species such as the atoms or molecules to come together or collide with each other.

In the given question statement C is incorrect as -

(c) According the postulates of collision theory the following conditions are necessary for any reaction to take place -  

(i) The molecule should collide with sufficient threshold energy.

(ii) The orientation of the molecules should be proper.

(iii) The collision should be effective.

Therefore, only the collision of atoms or molecules possessing sufficient threshold energy does not result into the product formation.