Question

Use this diagram to determine which of the following statements is true.

Answer 1

Answer:

D. Catalysts speed up the rate of reactions by lowering the amount of energy required for the reaction to proceed.

Explanation:

A catalyst is a substance that:

• speeds up the rate of a reaction .

• does not alter the products of the reaction .

• is unchanged chemically and in mass at the end of the reaction.

A catalyst provides an alternative reaction pathway that has a lower activation energy than the uncatalyzed reaction.

The figure shows how the energy of the reactants and products change during a reaction.