4
practice testMultiple Choice

Practice Test

Question 4 • 26-27 - C - RUSD Chemistry in the Earth System

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

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

Previous
Next