Fertilisers Flashcards
importance of fertilisers
they are used by farmers to restore essential nutrients to the soil
elements of fertilisers
Nitrogen (N)
Potassium (K)
Phosphrous (P)
N
nitrogen in the form of ammonium (NH4+) and nitrate (NO3-) ions.
P
Phosphrous which comes as phosphate ions (PO4 3-)
K
potassuim which comes as potassium ions (K+)
Ammonia
is a pungent, clear, colourless gas which dissolves in water to produce an alkaline solution.
Ammonia solution reacts with acids to form souble salts
the haber process
the reactants required are nitrogrn and hydrogen gas.
the products is ammonia gas.
this is a reversible reaction
iron pellets are used to catalyse this reaction
the ostwald process
can produce nitric acid for use in fertiliser producation.
the reactabts are ammonia, water and oxygen
the produces is nitric acis
platinium is used as a catalyse