The Fertiliser Industry (Grade 12 NSC Matric Physical Sciences): Flashcards

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The Fertiliser Industry
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Primary method for producing hydrogen in fertiliser industry

Steam reforming

Haber process equation

N2+3H2⇌2NH3\text{N}_2 + 3\text{H}_2 \rightleftharpoons 2\text{NH}_3

Catalyst in Haber process

Iron (Fe)

Process converting ammonia to nitric acid

Ostwald process

Process producing sulphuric acid for fertilisers

Contact process

Ammonium nitrate production equation

NH3+HNO3→NH4NO3\text{NH}_3 + \text{HNO}_3 \rightarrow \text{NH}_4\text{NO}_3

Nitrogen content (%) in urea

46.4%

NPK in fertilisers stands for

Nitrogen, Phosphorus, Potassium

Separation method to obtain nitrogen from air

Fractional distillation

Benefit of inorganic fertiliser water solubility

Nutrients immediately available to plant roots

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