Question

What is the term used to refer to the number of collisions per unit volume of the reaction mixture?

(a) Collision force

(b) Collision frequency

(c) Collision energy

(d) Collision time period

I got this question in examination.

The question is from Collision Theory of Chemical Reactions in section Chemical Kinetics of Chemistry – Class 12

Answer 1

Right option is (b) Collision frequency

For explanation: The number of collisions per unit volume of the reaction mixture is known as collision frequency. According to this theory, the reactant molecules are assumed to be hard spheres and reaction is postulated to occur when molecules collide with each other.