t10-NPK fertilisers

Question 1

what are fertilisers + forumlated fertilisers

Answer 1

added to soil to add nutrients to plants
-formulated fertilisers are made by combining certain chemicals in specific ratios

Question 2

how is nitrogen fertiliser made

Answer 2

-plants make amino acids and protein out of this for growth
-main source is ammonia
-ammonia+oxygen+water->nitric acid
-ammonia+acids->ammonium salts

Question 3

how is phosphorus fertiliser made

Answer 3

-phosphate is mined as phosphate rock
-phosphate salts are insoluble so plants can’t use them as nutrients
-phospheric acid produces calcium phosphate
-sulfuric acid produces calcium sulfate+calcium phosphate
-nitric acid produces phosphoric acid+calcium phosphate

Question 4

how is potassium fertiliser made

Answer 4

potassium chloride and potassium sulfate are mined and can be used directly