Fertilizer Industry Processes
Chemistry ⇒ Industrial Chemistry
Fertilizer Industry Processes starts at 11 and continues till grade 12.
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Describe the difference between straight and complex fertilizers.
Describe the main steps involved in the Ostwald process for nitric acid production.
Describe the role of a catalyst in the Haber process.
Explain the environmental impact of nitrate leaching from fertilizers.
Explain the main chemical reaction that occurs in the Haber process for ammonia synthesis.
Explain why controlled-release fertilizers are important in modern agriculture.
Explain why high pressure is used in the Haber process.
Explain why the temperature in the Haber process is not set higher than 500°C, even though higher temperatures increase the reaction rate.
Which of the following is a common impurity in phosphate rock that must be removed during fertilizer production? (1) Silica, (2) Iron, (3) Fluorine, (4) Sodium
Which of the following is a common method for removing impurities from phosphate rock before fertilizer production? (1) Roasting, (2) Flotation, (3) Distillation, (4) Electrolysis
Which of the following is a major environmental issue caused by phosphate fertilizers? (1) Acid rain, (2) Eutrophication, (3) Ozone depletion, (4) Global warming
Which of the following is a major use of sulfuric acid in the fertilizer industry? (1) Production of urea, (2) Production of superphosphate, (3) Production of ammonium nitrate, (4) Production of potassium chloride
Fill in the blank: The chemical formula of urea is ________.
Fill in the blank: The Haber process is typically carried out at a temperature of about ________ °C.
Fill in the blank: The main by-product of the Ostwald process is ________.
Fill in the blank: The main industrial method for producing potassium fertilizers is mining and refining of ________.
True or False: Ammonium nitrate is both a fertilizer and an explosive.
True or False: Ammonium sulfate is produced by reacting ammonia with sulfuric acid.
True or False: The Contact process is used in the production of sulfuric acid, which is an important component in some fertilizers.
True or False: The main source of phosphorus in fertilizers is phosphate rock.
