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6. What is the chemical formula for sulfuric acid?
7. What is the catalyst for the second stage of the Contact Process?
- Vanadium Oxide
- Iron (II) Oxide
- Alumina
- Lead
8. What do both the Haber Process and the Contact Process contain?
- Processes carried out under high pressure
- Reversible reactions
- Salt-producing reactions
- Irreversible processes
9. What is the majority of sulfuric acid used for?
- Fertiliser by reacting with ammonia/ammonium hydroxide to make ammonium sulfate
- Used as an acid in classrooms and laboratories for experiments
- Detergents by reacting with the -OH molecules forming a long chain molecule
- Making paints - sulfuric acid reacts with ilmenite in one of the stages of obtaining white pigment
10. What is solution mining?
- Hot water pumped into salt deposits underground, reacts with the salt to form a solution and is pumped back up
- Mining from salt deposits underground, the mined salt is sent back to the surface where it is added to water to form a solution
11. What is the first stage of the Contact Process?
- Burning sulfur in air to make sulfur dioxide
- Sulfur reacts with Ammonia
- Adding liquefied sulfur to distilled water
- Sulfuric acid is added to sodium hydroxide
12. What is the third stage of the Contact Process
- Sulfur trioxide is condensed and stored in pressurised containers
- Sulfur trioxide reacts with water to form sulfuric acid
- Sulfur trioxide reacts with hydrogen to form sulfuric acid
- Sulfur trioxide reacts with ammonium to produce ammonium sulfite
13. What temperature is needed for the second stage of the Contact Process?
14. Which is NOT a use of Ammonia?
- Fertiliser
- Explosives
- A biofuel
- Making nitric acid
15. What pressure is needed for the second stage of the Contact Process?
- 450 atm
- 2000 atm
- 2 atm
- 200 atm
16. In the process of making Ammonia what pressure is needed?
- 50 atm
- 2 atm
- 200 atm
- 600 atm
17. In the process of making Ammonia what temperature is needed?
18. What is the chemical formula of Ammonia?
19. Name the formula for common salt?
20. What happens to the unreacted Ammonia from the Haber Process?
- It passes into a cooling tank (with the unreacted Nitrogen and Hydrogen) where the Ammonia is liquefied and removed into pressurised storage vessels.
- It is separated from the unreacted Nitrogen and Hydrogen by fractional distillation
- It passes into a chimney where it is released into the atmosphere
- It is desposed of