The Haber process and fertilisers

2 lessons in Using resources.

11 exam questions · 21 marks

10.10 The Haber process How ammonia is made by the Haber process from nitrogen and hydrogen, the conditions used (450 °C, 200 atmospheres, iron catalyst), recycling of unreacted gases, and (Higher) why the conditions are a compromise between rate, yield and cost. AQA Edexcel OCR 6 questions 10.11 NPK fertilisers Why plants need nitrogen, phosphorus and potassium, how ammonium nitrate, ammonium sulfate and phosphate fertilisers are made from raw materials, and how the laboratory preparation of ammonium sulfate compares with industrial production. Separate only AQA Edexcel OCR 5 questions