Which phrase describes what happens to the reaction pathway and activation energy of a reaction to

June 2023 NY Regents Chemistry Exam

19 Which phrase describes what happens to the reaction pathway and activation energy of a reaction to which a catalyst is added?

(1) the same pathway with the same activation energy

(2) the same pathway with a lower activation energy

(3) a different pathway with the same activation energy

(4) a different pathway with a lower activation energy

Solution: A catalyst lowers the activation energy by providing a different pathway for the reaction.

Answer: 4

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