CAIE IGCSE Chemistry 6.3.5 Symbol Equation for the Production of Questions

Write and identify the reversible Haber equation for producing ammonia from nitrogen and hydrogen, including its industrial catalyst and purpose.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • write N2 + 3H2 ⇌ 2NH3 with correct formulae, balancing and reversible arrow
  • link ammonia production from nitrogen and hydrogen to the named Haber process
  • identify the Haber process and its iron catalyst in industrial ammonia production
  • state the industrial purpose and product of the Haber process

CAIE IGCSE Chemistry 6.3.5 Symbol Equation for the Production of Questions question 1

[Maximum number: 1]

Some information about three gases, P, Q and R, is listed.
- Gas P forms when magnesium reacts with dilute hydrochloric acid.
- Gas Q makes up 78% of the air.
- Gas R forms when gas P reacts with gas Q.

What is gas R ?

A

ammonia

B

methane

C

nitrogen dioxide

D

water vapour

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