Select the correct answer.

Which of the following is necessary to increase the rate of a reaction?

A.

a decrease in the frequency of collisions

B.

an increase in the frequency of collisions

C. a decrease in the frequency of successful collisions

D. an increase in the frequency of successful collisions

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Answer: Option D) an increase in the frequency of successful collisions

Explanation:

The faster the reactants particles mix with one another, the higher the rate of a reaction to yield products.

Therefore, any factor such as addition of catalyst or increased surface area that will increase in the frequency of successful collisions between the reactants particles is then necessary to increase the rate of a reaction.