Question detail
If the forward reaction of a reversible reaction releases 30 kJ of energy, how much energy is released in the reverse reaction?
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. 30 kJ
- B. 60 kJ
- C. 0 kJ
- D. 15 kJ
Answer
0 kJ
Explanation
The correct answer is 0 kJ. This answer directly addresses the question: If the forward reaction of a reversible reaction releases 30 kJ of energy, how much energy is released in the reverse reaction? 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
Confusing Exothermic and Endothermic
Students often confuse which direction of a reversible reaction is exothermic and which is endothermic.
To fix this, remember that if the forward reaction releases energy (exothermic), the reverse reaction must absorb energy (endothermic), and vice versa.
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