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6 marksAmmonia

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

The reaction to form the ammonia product is favoured towards the formation of the product under certain reaction conditions.

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 Haber-Bosch process.

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Other parts of this question

  1. 3(a)Identify the species represented by the labels A, B, C and D in Figure 4.[5 marks]
  2. 3(b)Use an equation with state symbols to indicate the process that occurs in Vessel E in Figure 4.[2 marks]
  3. 3(c)Use chemical formula and state symbols to indicate the process that occurs in Vessel F in Figure 4.[2 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