Which of the following factors increases the rate of a chemical reaction by decreasing the activation energy barrier?

Question

Quizplus · Accepted Answer

A catalyst is a substance that lowers the activation energy barrier for a reaction, allowing it to proceed more easily and quickly. Increasing temperature and concentration of reactants can also increase the rate of a reaction, but they do not directly affect the activation energy barrier. Increasing the surface area of a phase interface can increase the rate of some reactions, but it does not necessarily decrease the activation energy barrier. Decreasing the temperature generally decreases the rate of a reaction by lowering the kinetic energy of the molecules, which also increases the activation energy barrier.

Which of the Following Factors Increases the Rate of a Chemical