Haber Process and NPK Fertilisers Flashcards
(9 cards)
1
Q
What type of catalyst is used to speed up the process?
A
Iron Catalyst
2
Q
Why is 450°C used?
A
Has a higher rate of reaction despite the lower yield
3
Q
Why is 200 atmospheres used?
A
Its safe and less expensive
4
Q
Phosphate Rock + Nitric Acid ——> ________ + ________
A
Phosphoric acid + calcium nitrate
5
Q
What fertiliser is formed when the phosphoric acid is treated with ammonia?
A
Ammonium phosphate
6
Q
Phosphate rock + sulfuric acid
——> ______ + ______
A
Calcium phosphate + calcium sulfate
7
Q
What fertiliser is used from calcium phosphate + calcium sulfate?
A
Single superphosphate
8
Q
Phosphate rock + phosphoric acid ——–> ___________
A
Triple superphosphate
9
Q
Why is ammonium phosphate better than ammonium nitrate?
A
Ammonium phoen sphate contains both nitrogen AND phosphate
