KA 3: Fertilisers

Cards (15)

  • What is the purpose of fertilisers?
    To increase food crop yields
  • What three elements are essential in fertilisers?
    Nitrogen, Phosphorus, and Potassium
  • How do fertilisers benefit soil?
    They restore essential elements for growth
  • What is ammonia's state and smell?
    Colourless gas with a pungent smell
  • What happens when ammonia is dissolved in water?
    It forms an alkaline solution
  • What does ammonia produce when reacted with acids?
    Soluble ammonium salt and water
  • Who created the Haber Process?
    Fritz Haber
  • What is the role of the iron catalyst in the Haber Process?
    To speed up the reaction
  • What happens if the temperature is too low in the Haber Process?
    The process is not economical
  • What happens if the temperature is too high in the Haber Process?
    The backward reaction becomes dominant
  • What is a significant aspect of Fritz Haber's legacy?
    He is known as the father of chemical warfare
  • What is the Ostwald Process used for?
    To create Nitric Acid
  • What are the reactants in the Ostwald Process?
    Ammonia, water, and oxygen
  • What catalyst is used in the Ostwald Process?
    Platinum
  • What are the key points about fertilisers and their production?
    • Fertilisers restore essential soil elements
    • Key elements: Nitrogen, Phosphorus, Potassium
    • Ammonia and Nitric acid produce nitrogen salts
    • Ammonia is a colourless gas with a pungent smell
    • Ammonia forms an alkaline solution in water
    • Ammonia reacts with acids to form ammonium salts
    • Haber Process creates ammonia using an iron catalyst
    • Ostwald Process creates nitric acid using ammonia, water, and oxygen with platinum catalyst