Question detail
In the thermal decomposition of ammonium chloride, the forward reaction is endothermic. If 50 kJ of energy is absorbed during this reaction, how much energy is released during the reverse reaction?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reversible reactions and dynamic equilibrium
Question
In the thermal decomposition of ammonium chloride, the forward reaction is endothermic. If 50 kJ of energy is absorbed during this reaction, how much energy is released during the reverse reaction?
Answer
50 kJ
Explanation
The question tests understandingof the relationship between endothermicand exothermicreactions in reversible processes. Since the forward reaction is endothermic, the reverse reaction must release the same amount of energy, makingit exothermic. This answer is strongest when it stays anchored to Energy changes and reversible reactions and directly addresses identify whether the forward or reverse reaction is endothermicfrom given information.
Common mistake
Confusing Endothermic and Exothermic Reactions
Students often confuse which direction of a reversible reaction is endothermic, mistakenly identifying the forward reaction as endothermic when it is actually exothermic.
To fix this, students should carefully analyze the energy changes associated with each reaction direction, remembering that if one direction is exothermic, the reverse must be endothermic.
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