Fertilisers (AQA GCSE Chemistry): Flashcards

Nitrogen (N), phosphorus (P), potassium (K)

Help crops grow better and produce higher yields

$\text{PO}_4^{3-}$

Insoluble

Treat with acids

Ammonium phosphate

So they can be sprayed as solution onto crops

Potassium chloride and potassium sulfate

$\text{N}_2 + 3\text{H}_2 \rightleftharpoons 2\text{NH}_3$

Nitric acid

$\frac{\text{mass of element}}{\text{relative formula mass}} \times 100\%$

Products from one step become raw materials for next