Production of Sulfuric Acid Quiz
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5 questions, one answer each
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1. What is the final product of the Contact process?
- A. Ammonia
- B. Sulfuric acid
- C. Sulfur dioxide
- D. Nitric acid
2. Which stage of the Contact process is reversible?
- A. Stage 1
- B. Stage 2
- C. Stage 3
- D. All three stages
3. What catalyst is used in Stage 2 of the Contact process?
- A. Iron
- B. Vanadium(V) oxide
- C. Platinum
- D. Nickel
4. Why is atmospheric pressure, rather than high pressure, used in Stage 2?
- A. High pressure would destroy the catalyst
- B. The yield at atmospheric pressure is already very high, so higher pressure is not cost-effective
- C. Sulfur trioxide cannot form under pressure
- D. Atmospheric pressure is required by law
5. Stage 2 of the Contact process is exothermic in the forward direction. A student suggests using a much lower temperature than 450°C to maximise yield. Why is this not done in practice?
- A. Lower temperature would destroy the reactants
- B. Lower temperature would make the reaction rate too slow to be economical
- C. Lower temperature increases the pressure needed
- D. Lower temperature would prevent SO2 from forming