Question detail
If a reversible reaction has a forward reaction that releases 25 kJ of energy, what is the energy change for 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. 25 kJ
- B. 50 kJ
- C. 0 kJ
- D. 10 kJ
Answer
The correct option is 25 kJ.
Explanation
The correct option is "25 kJ" because it supports the approved learning objective: Identify whether the forward or reverse reaction is exothermic from given information. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Energy changes and reversible reactions.
Common mistake
Confusing Exothermic and Endothermic
Students often confuse which direction of a reversible reaction is exothermic and which is endothermic.
To fix this, carefully analyze the energy changes described in the reaction and remember that if one direction is exothermic, the opposite direction must be endothermic.
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