What happens when you decrease the temp of a chemical equation?

Question

According to kinetic and collision theory, which of the following would you expect to occur as a result of decreasing the temperature of a chemical reaction?

A. The rate that particles collide will decrease.

B. The average space between particles will increase.

C. The percent of collisions occurring in the proper orientation will decrease.

D. The average kinetic energy of the particles will increase.

E. The average velocity of the particles will decrease.

Answer 1

As temperature decreases, then molecular speeds decrease and the collision rate decreases, so that the reaction rate decreases.

A -- yes. Collision rate will decrease

B -- no.  As T decreases, volume of gases will decrease, molecules get closer together

C -- Orientation of molecules is random, therefore the fraction of the correct orientation won't change

D -- no.  KE will decrease.

E -- yes,  The average speed of molecules will decrease.