Fertilizer Industry Processes
Chemistry ⇒ Industrial Chemistry
Fertilizer Industry Processes starts at 11 and continues till grade 12.
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See sample questions for grade 11
Calculate the mass of ammonia produced from 34 g of nitrogen gas in the Haber process. (N₂ + 3H₂ → 2NH₃; N=14, H=1)
Calculate the percentage of nitrogen by mass in urea (CO(NH₂)₂). (Atomic masses: C=12, O=16, N=14, H=1)
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.
Name the main chemical used as a source of phosphorus in the fertilizer industry.
State one environmental concern associated with excessive use of nitrogen fertilizers.
State one reason why potassium is important in plant nutrition.
State the main advantage of using compound fertilizers over straight fertilizers.
