Question detail
In a reaction profile, how can you identify whether a reaction is exothermic or endothermic?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
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Topic
Exothermic and endothermic reactions
Question
In a reaction profile, how can you identify whether a reaction is exothermic or endothermic?
Answer
You can identify an exothermic reaction by observing that the energy of the products is lower than that of the reactants, while an endothermic reaction shows that the products have higher energy than the reactants.
Explanation
This question assesses the ability to analyze reaction profiles and distinguish between exothermic and endothermic reactions based on energy levels. Understanding this difference is crucial for predicting the behavior of chemical reactions.
Common mistake
Misinterpreting the reaction profile curve
Students think the curved line on a reaction profile represents the speed of the reaction rather than the change in energy as the reaction proceeds
Explain that the curved line shows the variation in potential energy of the system as reactants convert to products, not the reaction rate
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