Fertilisers

Question 1

What are used as fertilisers?

Answer 1

Compounds of nitrogen (N), phosphorus (P) and potassium (K)

Question 2

What are NPK fertilisers?

Answer 2

Formulations of various salts containing appropriate percentages
of the elements.

Question 3

What can ammonia be used to manufacture?

Answer 3

Ammonium salts and nitric acid

Question 4

What 3 things are obtained from mining?

Answer 4

Potassium chloride, potassium sulfate and phosphate rock

Question 5

What happens to phosphate rock before it is used as fertilisers?

Answer 5

Needs treating with nitric or sulfuric acid to produce soluble salts

Question 6

What does phosphate rock produce when it is reacted with nitric acid?

Answer 6

Calcium nitrate

Question 7

What does phosphate rock produce when it is reacted with sulphuric acid?

Answer 7

It produces single
superphosphate (calcium phosphate + calcium phosphate)

Question 8

What does phosphate rock produce when it is reacted with phosphoric acid?

Answer 8

It produces triple
superphosphate (Calcium phosphate)