Question detail
Describe the effect of temperature on the rate of reaction and provide a reason for this effect.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Rate of reaction
Question
Describe the effect of temperature on the rate of reaction and provide a reason for this effect.
Answer
As the temperature increases, the rate of reaction also increases. This is because higher temperatures give particles more kineticenergy, leadingto more frequent collisions and a greater proportion of collisions havingenough energy to overcome the activation energy barrier.
Explanation
This question assesses the ability to explain the impact of temperature on reaction rates usingscientificreasoning. The answer connects temperature to kineticenergy and collision theory, demonstratinga clear understandingof the concepts involved.
Common mistake
Temperature effect misinterpreted
Students often think that increasing temperature always increases the rate of reaction, even for reactions that are endothermic or have a temperature-dependent equilibrium shift.
Explain that while higher temperature generally increases reaction rate by providing more kinetic energy and higher collision frequency, it can also shift equilibria or favour reverse reactions in some cases. Clarify that the temperature dependence of the rate is described by the Arrhenius equation and that the effect is not universal for all reactions.
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