What happens to the fraction of molecules able to collide successfully in a system when the system is cooled?
A)The fraction is not affected.
B)The fraction increases.
C)The fraction decreases.
D)There is not enough information to tell.

Question

Quizplus · Accepted Answer

When a system is cooled, the kinetic energy of the molecules decreases, leading to fewer molecules having enough energy to overcome the activation energy barrier for a reaction. This results in a decrease in the fraction of molecules able to collide successfully.

What Happens to the Fraction of Molecules Able to Collide