Question detail
In the context of the Haber process, which statement best reflects the trade‑off between rate and yield?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The Haber process and the use of NPK fertilisers
Question
- A. A higher pressure increases both rate and yield equally.
- B. A higher temperature increases rate but reduces yield.
- C. A lower temperature increases rate but reduces yield.
- D. A lower pressure increases rate but reduces yield.
Answer
The correct option is A higher temperature increases rate but reduces yield.. This answer is correct because it matches the approved learning objective to explain the trade-off between rate of production and equilibrium yield in the Haber process. (HT only; Chemistry only) in the subtopic The Haber process.
Explanation
The correct option is A higher temperature increases rate but reduces yield.. A higher temperature increases rate but reduces yield. is correct because it directly supports the approved learning objective to explain the trade-off between rate of production and equilibrium yield in the Haber process. (HT only; Chemistry only). This belongs to the subtopic The Haber process within The Haber process and the use of NPK fertilisers, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from The Haber process.
Common mistake
Rate vs. Yield Confusion
Students often confuse the concepts of rate of production and equilibrium yield, thinking that increasing the rate always increases the yield.
To fix this, students should understand that while a higher rate of production can lead to more product in a shorter time, the equilibrium yield is determined by the reaction conditions and the position of equilibrium, which may not change with rate.
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