Fertilisers Flashcards

1
Q

importance of fertilisers

A

they are used by farmers to restore essential nutrients to the soil

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2
Q

elements of fertilisers

A

Nitrogen (N)
Potassium (K)
Phosphrous (P)

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3
Q

N

A

nitrogen in the form of ammonium (NH4+) and nitrate (NO3-) ions.

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4
Q

P

A

Phosphrous which comes as phosphate ions (PO4 3-)

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5
Q

K

A

potassuim which comes as potassium ions (K+)

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6
Q

Ammonia

A

is a pungent, clear, colourless gas which dissolves in water to produce an alkaline solution.
Ammonia solution reacts with acids to form souble salts

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7
Q

the haber process

A

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

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8
Q

the ostwald process

A

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

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