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In a reaction profile, what does the height of the peak represent, and how does this relate to the activation energy of a reaction?
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Rate of reaction
Question
In a reaction profile, what does the height of the peak represent, and how does this relate to the activation energy of a reaction?
Answer
The height of the peak in a reaction profile represents the activation energy required for the reaction to occur. A higher peak indicates a higher activation energy, meaningthat more energy is needed for the reactants to convert into products.
Explanation
This question assesses the student's ability to interpret reaction profiles and understand the concept of activation energy. It requires a clear understandingof the relationship between the peak height and the energy barrier for a reaction.
Common mistake
Misunderstanding Reaction Profiles
Students often confuse the energy levels of reactants and products in catalysed and uncatalysed reactions on reaction profiles.
To fix this, students should practice sketching reaction profiles, clearly labeling the activation energy for both catalysed and uncatalysed pathways, and noting how the catalyst lowers the activation energy.
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