IGCSE Chemistry - Industrial Processes

The Haber Process and the Contact Process

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1. What is the second stage of the Contact Process?

  • Sulfur dioxide reacts with more oxygen to make sulfur trioxide
  • Ethene forms the polymer poly(ethene)
  • Methanol and hydrogen bromide form bromomethane
  • Sulfur dioxide reacts with water to form a solution
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2. How are Hydrogen, Chlorine and Sodium Hydroxide manufactured?

  • Evaporating brine
  • Electrolysis of brine
  • Reacting salt solution with hydrochloric acid

3. What is the Catalyst in the process of making Ammonia?

  • Iron
  • Vanadium Oxide
  • Manganese Oxide
  • Alumina

4. What pressure is needed for the second stage of the Contact Process?

  • 2 atm
  • 2000 atm
  • 200 atm
  • 450 atm

5. Name the formula for common salt?

  • H2SO4
  • NaCl
  • MgCl2
  • NaBr


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