How can one increase the rate of a chemical reaction? a. decrease the concentration of the reactants. b. add a catalyst. c. increase the activation energy needed. d. increase the entropy of the reactants. e. cool the reactants.

b. Add a catalyst.

Explanation:

Only B is correct.

The factors that affects the rate of chemical reactions are:

The rate of chemical reaction is a measure of the speed of the reaction.

When a foreign body is added to a reaction, the speed can be influenced. If the body increases the reaction rate, it is a positive catalyst. Catalysts are used to reduce the reaction time of many reactions.