IGCSE Chemistry - Industrial Processes

The Haber Process and the Contact Process

What is the chemical formula of Ammonia?
NH3
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What is the process of making Ammonia from the raw materials Nitrogen and Hydrogen?
The Haber Process
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In the process of making Ammonia what temperature is needed?
450
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In the process of making Ammonia what pressure is needed?
200 atm
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What is the Catalyst in the process of making Ammonia?
Iron
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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.
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What happens to the unreacted Nitrogen and Hydrogen from the Haber Process?
They are pumped back into the reactor
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What do both the Haber Process and the Contact Process contain?
Reversible reactions
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What is the first stage of the Contact Process?
Burning sulfur in air to make sulfur dioxide
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What is the second stage of the Contact Process?
Sulfur dioxide reacts with more oxygen to make sulfur trioxide
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What temperature is needed for the second stage of the Contact Process?
450
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What is the catalyst for the second stage of the Contact Process?
Vanadium Oxide
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What pressure is needed for the second stage of the Contact Process?
2 atm
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What is the third stage of the Contact Process
Sulfur trioxide reacts with water to form sulfuric acid
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What is the chemical formula for sulfuric acid?
H2SO4
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What is the majority of sulfuric acid used for?
Fertiliser by reacting with ammonia/ammonium hydroxide to make ammonium sulfate
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Name the formula for common salt?
NaCl
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What is solution mining?
Hot water pumped into salt deposits underground, reacts with the salt to form a solution and is pumped back up
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How are Hydrogen, Chlorine and Sodium Hydroxide manufactured?
Electrolysis of brine
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Other cards in this set

Card 2

Front

What is the process of making Ammonia from the raw materials Nitrogen and Hydrogen?

Back

The Haber Process

Card 3

Front

In the process of making Ammonia what temperature is needed?

Back

Preview of the front of card 3

Card 4

Front

In the process of making Ammonia what pressure is needed?

Back

Preview of the front of card 4

Card 5

Front

What is the Catalyst in the process of making Ammonia?

Back

Preview of the front of card 5
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