Question detail
In a reversible reaction at equilibrium, what happens to the rates of the forward and reverse reactions?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reversible reactions and dynamic equilibrium
Question
- A. The forward reaction rate increases while the reverse reaction rate decreases.
- B. The forward and reverse reaction rates are equal.
- C. The reverse reaction rate increases while the forward reaction rate decreases.
- D. The rates of both reactions become zero.
Answer
The forward and reverse reaction rates are equal.
Explanation
The correct answer is The forward and reverse reaction rates are equal.. This answer directly addresses the question: In a reversible reaction at equilibrium, what happens to the rates of the forward and reverse reactions? It matches the approved Chemistry 8462 learning objective and the linked subtopic. The other options are incorrect because they either change the rate, catalyst, reversible reaction, equilibrium, or graph context, or they do not answer the exact point being tested.
Common mistake
Misinterpreting rate equality at equilibrium
Students think that at equilibrium the forward and reverse reactions have stopped, so no reaction occurs
Explain that at equilibrium the forward and reverse reactions continue at the same rate, so the net change is zero but individual reaction rates are still non‑zero
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