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Ammonia · CAPE Chemistry Unit 2

54 past-paper questions on Ammonia, part of Industry and the Environment, from every CAPE Chemistry Unit 2 paper on Quelpr.

Practise Ammonia
  1. 9(b)(i)2 marks· CAPE Chemistry Unit 2 · 2005 · Paper 2Suggest TWO properties of ammonia that led to its replacement by CCl2F2.
  2. 3(a)2 marks· CAPE Chemistry Unit 2 · 2006 · Paper 2Identify source A and process I used to obtain nitrogen gas.
  3. 3(b)(i)1 mark· CAPE Chemistry Unit 2 · 2006 · Paper 2Suggest another condition required at process II which is used to yield hydrogen gas from CH₄ and H₂O.
  4. 3(b)(ii)2 marks· CAPE Chemistry Unit 2 · 2006 · Paper 2Write a balanced equation for the reaction at process II.
  5. 3(c)2 marks· CAPE Chemistry Unit 2 · 2006 · Paper 2Identify the condition at III that minimizes the time taken to produce a batch of ammonia from the starting materials, and give a reason.
  6. 3(d)2 marks· CAPE Chemistry Unit 2 · 2006 · Paper 2Under what conditions would ammonia be held in the storage cylinders?
  7. 3(e)1 mark· CAPE Chemistry Unit 2 · 2006 · Paper 2Describe a simple laboratory test that could be carried out at point X to test for a leak in a storage cylinder.
  8. 6(a)2 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Identify the raw material source and the process used to produce nitrogen.
  9. 6(b)(i)1 mark· CAPE Chemistry Unit 2 · 2010 · Paper 2State the name of the process used to obtain hydrogen from natural gas and steam.
  10. 6(b)(ii)2 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Write the chemical equation for the production of hydrogen from natural gas and steam.
  11. 6(c)2 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Using Le Chatelier's principle, describe the reaction conditions (temperature and pressure) under which optimal equilibrium yields of ammonia can be obtained.
  12. 6(d)2 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Account for the differences between the theoretical optimal conditions described in (c) and the actual conditions used in the Haber Process.
  13. Q351 mark · multiple choice· CAPE Chemistry Unit 2 · 2012 · Paper 1In the Bosch-Haber process, \text{N}_2 and \text{H}_2 can be obtained from X and Y respectively. Which of the following pairs BEST describes X and Y?
  14. 6(b)4 marks· CAPE Chemistry Unit 2 · 2012 · Paper 2State TWO safety concerns associated with the locating of an ammonia plant and for EACH concern suggest a measure that can be taken to reduce its effect.
  15. Q331 mark · multiple choice· CAPE Chemistry Unit 2 · 2014 · Paper 1The essential conditions for the Haber process are
  16. 3(a)(i)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Write the equation for the process.
  17. 3(a)(ii)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2Indicate the conditions of temperature and pressure.
  18. 3(a)(iii)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2State the process by which nitrogen is produced for the production of ammonia.
  19. 3(b)(i)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Explain the effect on the yield of ammonia by raising the temperature.
  20. 3(b)(ii)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Explain the effect on the yield of ammonia by raising the pressure.
  21. 3(c)(i)3 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Identify the process occurring at A, B, and D.
  22. 3(c)(ii)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2State the condition necessary at C.
  23. 3(c)(iii)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2What is the physical state of ammonia after the process at D?
  24. Q341 mark · multiple choice· CAPE Chemistry Unit 2 · 2016 · Paper 1The essential conditions for the Haber process are
  25. Q331 mark · multiple choice· CAPE Chemistry Unit 2 · 2017 · Paper 1From the reaction given below, a high pressure would give the best yield, but in industry, a moderate pressure is used. \text{N}_2(\text{g}) + 3\text{H}_2(\text{g}) \rightleftharpoons 2\text{NH}_3(\text{g}) Why is…
  26. Q431 mark · multiple choice· CAPE Chemistry Unit 2 · 2017 · Paper 1Which of the following is NOT manufactured using ammonia?
  27. 6(b)4 marks· CAPE Chemistry Unit 2 · 2017 · Paper 2Using an appropriate equation, apply the principles of chemical equilibrium to deduce the theoretical conditions for the production of ammonia.
  28. 6(c)5 marks· CAPE Chemistry Unit 2 · 2017 · Paper 2Discuss the actual conditions employed in industrial plants for ammonia production.
  29. 6(d)2 marks· CAPE Chemistry Unit 2 · 2017 · Paper 2Explain ONE possible effect of the ammonia industry on groundwater usage.
  30. 3(a)5 marks· Chemistry · Unit 2 Q3 3(a)Identify the species represented by the labels A, B, C and D in Figure 4.
  31. 3(a)(i)1 mark· Chemistry · Unit 2 Q3 3(a)(i)State ONE reason why a catalyst is needed in this reaction.
  32. 3(a)(ii)2 marks· Chemistry · Unit 2 Q3 3(a)(ii)Using Le Chatelier's principle, explain the effect of temperature on the direction of equilibrium for the ammonia formation.
  33. 3(a)(iii)1 mark· Chemistry · Unit 2 Q3 3(a)(iii)State whether the temperatures used in the Haber-Bosch synthesis favour the formation of high yields of ammonia.
  34. 3(a)(iv)2 marks· Chemistry · Unit 2 Q3 3(a)(iv)Comment on the statement “High pressure conditions favour the formation of ammonia in high yields."
  35. 3(a)(v)2 marks· Chemistry · Unit 2 Q3 3(a)(v)With reference to Figure 1 on page 13, state TWO possible design limitations that could lead to reduced product yield.
  36. 3(a)(vi)1 mark· Chemistry · Unit 2 Q3 3(a)(vi)Write the Kₚ expression for the Haber–Bosch process.
  37. 3(a)(vii)1 mark· Chemistry · Unit 2 Q3 3(a)(vii)State the impact of the catalyst on the Kₚ of the reaction.
  38. 3(b)2 marks· Chemistry · Unit 2 Q3 3(b)Use an equation with state symbols to indicate the process that occurs in Vessel E in Figure 4.
  39. 3(b)(i)1 mark· Chemistry · Unit 2 Q3 3(b)(i)Complete statement (i).
  40. 3(b)(ii)1 mark· Chemistry · Unit 2 Q3 3(b)(ii)Complete statement (ii).
  41. 3(b)(iii)2 marks· Chemistry · Unit 2 Q3 3(b)(iii)Complete statement (iii).
  42. 3(b)(iv)2 marks· Chemistry · Unit 2 Q3 3(b)(iv)Complete statement (iv).
  43. 3(b)(v)2 marks· Chemistry · Unit 2 Q3 3(b)(v)Comment on the statement "The production of ammonia under standard atmospheric conditions would prove to be more efficient in the presence of a catalyst than the Haber-Bosch process."
  44. 3(c)2 marks· Chemistry · Unit 2 Q3 3(c)Use chemical formula and state symbols to indicate the process that occurs in Vessel F in Figure 4.
  45. 3(d)(i)6 marks· Chemistry · Unit 2 Q3 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 Haber-Bosch process.
  46. 3(d)(ii)1 mark· Chemistry · Unit 2 Q3 3(d)(ii)Identify the unique feature of the starting reactants that is mostly responsible for the exothermic nature of the reaction.
  47. 3(d)(iii)3 marks· Chemistry · Unit 2 Q3 3(d)(iii)State the reaction conditions that are specific to the Haber-Bosch process.
  48. 3(d)(iv)3 marks· Chemistry · Unit 2 Q3 3(d)(iv)Indicate how EACH component of the conditions stated in (d) (iii) increases the rate of collisions of reactant molecules.
  49. 3(e)2 marks· Chemistry · Unit 2 Q3 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 by-product of the Haber-Bosch process.
  50. 3(f)2 marks· Chemistry · Unit 2 Q3 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.
  51. 3(g)2 marks· Chemistry · Unit 2 Q3 3(g)Identify TWO ways in which ammonia affects the environment.
  52. 3(h)(i)2 marks· Chemistry · Unit 2 Q3 3(h)(i)State the reason for this.
  53. 3(h)(ii)2 marks· Chemistry · Unit 2 Q3 3(h)(ii)Give the formula for any ONE of the most commonly used ammonium salts in fertilizers.
  54. 6(c)(i)3 marks· Chemistry · Unit 2 Q6 6(c)(i)Explain why this is NOT a good practice.

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