7
practice testMultiple Choice

Practice Test

Question 7 • Chemistry

Which statement is usually true about the relationship between activation energy and reaction rates?

Answer
A
Low activation energy barriers result in low rates.
B
High activation energy barriers result in no reaction.
C
High activation energy barriers result in low rates.
D
Low activation energy barriers result in no reaction.

Explanation

At a given temperature, a higher activation energy means fewer reacting particles have enough energy to overcome the barrier in a collision. With fewer successful collisions per unit time, the reaction rate is usually low. Therefore, the correct choice is “High activation energy barriers result in low rates.”

AI-written and checked against the verified answer.

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