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products from nitrogen
quiz
27
Chemistry
11th Grade
10/14/2006

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Cards

Term
Raw materials for the haber process.
Definition
Air and natural gas
Term
The gases that react to make ammonia.
Definition
Nitrogen and hydrogen
Term
The formula of ammonia.
Definition
NH3
Term
The temperature used in the Haber process.
Definition
450 C
Term
The pressure used in the haber process.
Definition
200 atm
Term
The catalyst used in the Haber process.
Definition
Iron
Term
Optimum temperature for high yield of ammonia (high or low).
Definition
Low
Term
Optimum pressure for high yield of ammonia (high or low).
Definition
High
Term
Why optimum temperature for high yield of ammonia is not used.
Definition
Too slow
Term
Why optimum pressure for high yield of ammonia is not used.
Definition
Too expensive
Term
The two factors compromised by using the chosen conditions for the Haber process.
Definition
Yield and rate
Term
What is done to the ammonia when it leaves the reactor in the haber process.
Definition
The ammonia is liquified
Term
What is done with unreacted gases when they leave the reactor in the haber process.
Definition
The unreacted gases are recycled
Term
The reaction between nitrogen and hydrogen is reversible. This means...
Definition
The reaction goes forwards and backwards
Term
An equilibrium is established when nitrogen and hydrogen react. This means that...
Definition
The rate of the forward and backward reactions are the same
Term
The reason why low temperature gives a high yield in the Haber process.
Definition
The forward reaction is exothermic
Term
The reason why high pressure gives a high yield in the Haber process.
Definition
The forward reaction causes a reduction in the number of gas molecules.
Term
The first stage in the manufacture of nitric acid involves reacting ammonia with oxygen. This type of reaction is called...
Definition
Oxidation
Term
The temperature used in the first stage in the manufacture of nitric acid.
Definition
900 C
Term
The catalyst used in the first stage in the manufacture of nitric acid.
Definition
Platinum
Term
The products of the first stage in the manufacture of nitric acid.
Definition
Nitrogen monoxide and water
Term
The formula of nitric acid.
Definition
HNO3
Term
The type of reaction when ammonia reacts with nitric acid.
Definition
Neutralisation
Term
The product made when ammonia reacts with nitric acid,
Definition
Ammonium nitrate
Term
The use of the product made when ammonia reacts with nitric acid,
Definition
Fertiliser
Term
The advantage of nitrogen based fertilisers
Definition
Increase the yield of crops
Term
The disadvantage of nitrate fertilisers.
Definition
They can contaminate drinking water
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