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5 marksAmmonia

CAPE Chemistry Unit 2 · May/June 2024 · Paper 2 · Question 3(a)

The industrial synthesis of ammonia, known as the Haber-Bosch process, is depicted in Figure 4.

Identify the species represented by the labels A, B, C and D in Figure 4.

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  1. 3(b)Use an equation with state symbols to indicate the process that occurs in Vessel E in Figure 4.[2 marks]
  2. 3(c)Use chemical formula and state symbols to indicate the process that occurs in Vessel F in Figure 4.[2 marks]
  3. 3(d)(i)State Le Chatelier's principle and use it to explain how increases in the pressure of the reactants support the formation of the ammonia product in the…[6 marks]
  4. 3(d)(ii)Identify the unique feature of the starting reactants that is mostly responsible for the exothermic nature of the reaction.[1 mark]
  5. 3(d)(iii)State the reaction conditions that are specific to the Haber-Bosch process.[3 marks]
  6. 3(d)(iv)Indicate how EACH component of the conditions stated in (d) (iii) increases the rate of collisions of reactant molecules.[3 marks]
  7. 3(e)The Haber-Bosch process generates 2% of the world's CO₂ emissions and consumes 1% of the world's energy. Indicate TWO ways in which CO₂ is emitted as a…[2 marks]
  8. 3(f)State the effects of the MAJOR limitations if the reaction in the Haber-Bosch process is done at STP? Effect 1. Effect 2.[2 marks]
  9. 3(g)Identify TWO ways in which ammonia affects the environment.[2 marks]
  10. 3(h)(i)State the reason for this.[2 marks]
  11. 3(h)(ii)Give the formula for any ONE of the most commonly used ammonium salts in fertilizers.[2 marks]

More practice: the rest of this paper · more Ammonia questions · all CAPE Chemistry Unit 2 past papers