Haber Process and NPK Fertilisers

• state the symbol equation for the haber process

  N2 + 3H2 reversible arrow 2NH3
• what are the main stages of the haber process

  nitrogen from the air and hydrogen from natural gas

  compressor

  iron catalyst beds

  cooling tank

  liquid ammonia out

  excess gases go back to the compressor
• what are the conditions for the haber process

  450 degrees

  200 atmospheres

  iron catalyst
• what is a fertilizer

  A formulation of ions to promote plant growth
• What is NPK

  nitrogen

  phosphorus

  potassium
• what does an NPK fertiliser contain

  Ammonium ions and nitrate ions

  phosphate ions

  potassium ions

  all ions must be soluble
• why can phosphate rock be used in fertiliser

  It is insoluble in water
• what are the reactions of phosphate rock

  +nitric acid = phosphoric acid

  + sulfuric acid = single superphosphate

  + phosphoric acid = triple superphosphate