CAIE IGCSE Chemistry 6.3.11 Typical Haber and Contact Process Questions

Explain the industrial compromise between rate, equilibrium yield, temperature, pressure and catalyst in the Haber process.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • explain how changing temperature or pressure affects reaction rate and equilibrium yield
  • link an iron catalyst to faster forward and reverse reactions without changing equilibrium yield
  • justify the compromise conditions used in the Haber process
  • explain why lower temperatures or higher pressures may be impractical or expensive

CAIE IGCSE Chemistry 6.3.11 Typical Haber and Contact Process Questions question 1

[Maximum number: 1]

Which row explains why a high temperature and an iron catalyst are used in the manufacture of ammonia by the Haber process?

high temperature

iron catalyst

increases the rate of the reaction

increases the equilibrium yield of ammonia

increases the rate of the reaction

increases the rate of the reaction

increases the equilibrium yield of ammonia

increases the equilibrium yield of ammonia

increases the equilibrium yield of ammonia

increases the rate of the reaction

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