Production of Ammonia Quiz
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5 questions, one answer each
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1. Which two elements are the raw materials for the Haber process?
- A. Nitrogen and oxygen
- B. Nitrogen and hydrogen
- C. Hydrogen and oxygen
- D. Carbon and hydrogen
2. What symbol is used in the Haber process equation to show it is reversible?
- A. →
- B. =
- C. ⇌
- D.
3. What catalyst is used in the Haber process?
- A. Vanadium(V) oxide
- B. Iron
- C. Platinum
- D. Nickel
4. Why are 450 °C and 200 atmospheres used rather than conditions that give a higher yield of ammonia?
- A. Higher yield conditions are impossible to achieve
- B. These conditions are a compromise giving an acceptable rate and yield at a reasonable cost
- C. Ammonia decomposes above these conditions
- D. The catalyst only works at these exact conditions
5. A student argues that increasing the pressure in the Haber process beyond 200 atm would definitely be economically better because it increases yield. Explain the flaw in this reasoning.
- A. Pressure has no effect on ammonia yield
- B. Higher pressure requires stronger, more expensive equipment, so the extra yield may not offset the extra cost
- C. Higher pressure slows the reaction down
- D. Ammonia cannot be liquefied at higher pressures