On a molecular level, how does decreasing the temperature affect the rate of a reaction?

A) Molecular speed increases, and more effective collisions will take place. The reaction will be faster.





B) Molecular speed increases, and fewer effective collisions will take place. The reaction will be slower.





C) Molecular speed slows, and fewer effective collisions will take place. The reaction will be slower.





D) Molecular speed slows, and more effective collisions will take place. The reaction will be faster.

On a molecular level, how does decreasing the temperature affect the rate of a reaction?
C, when the temperature is dropped the kinetic energy is lowered so there are less collisions and therefore less reactions.