Question detail
Why are unreacted nitrogen and hydrogen recycled in the Haber process?
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. To reduce waste and improve efficiency
- B. To increase the temperature
- C. To create more ammonia
- D. To lower the pressure
Answer
The correct option is To reduce waste and improve efficiency. This answer is correct because it matches the approved learning objective to apply dynamic equilibrium ideas to the Haber process. (HT only; Chemistry only) in the subtopic The Haber process.
Explanation
The correct option is To reduce waste and improve efficiency. To reduce waste and improve efficiency is correct because it directly supports the approved learning objective to apply dynamic equilibrium ideas to 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
Misunderstanding Dynamic Equilibrium
Students often confuse dynamic equilibrium with static equilibrium, thinking that the concentrations of reactants and products remain constant without any reaction occurring.
Dynamic equilibrium involves ongoing reactions where the rate of the forward reaction equals the rate of the reverse reaction, leading to constant concentrations of reactants and products.
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