Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Which of the following correctly explains why increasing temperature generally increases reaction rate?
Options
A It decreases the activation energy of the reaction
B It increases the kinetic energy of molecules, increasing the frequency of effective collisions
Correct Answer
C It increases the concentration of products
D It alters the stoichiometry of the reaction
Correct Answer

Option B is the correct answer.

Detailed Explanation

Increasing temperature raises the kinetic energy of molecules. This leads to more frequent collisions and a higher proportion of collisions that have sufficient energy to overcome the activation energy barrier, thus increasing the reaction rate.

Hint

Think about how temperature affects molecular motion and the energy of collisions.

Question Info