During the production of ammonia at the Point Lisas Industrial Estate in Trinidad, nitrogen and hydrogen react according to the equation: N₂(g) + 3H₂(g) → 2NH₃(g). If 10 dm³ of nitrogen reacts completely with hydrogen at constant temperature and pressure, what volume of ammonia is produced?

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Question

During the production of ammonia at the Point Lisas Industrial Estate in Trinidad, nitrogen and hydrogen react according to the equation: N₂(g) + 3H₂(g) → 2NH₃(g). If 10 dm³ of nitrogen reacts completely with hydrogen at constant temperature and pressure, what volume of ammonia is produced?

Accepted Answer

20 dm³ — Award 1 mark for C. From the balanced equation, 1 volume of N₂ produces 2 volumes of NH₃ (Gay-Lussac's Law of combining volumes). Therefore, 10 dm³ N₂ produces 2 × 10 = 20 dm³ NH₃. A is incorrect — it ignores the mole ratio. B is incorrect — it confuses the volume of H₂ needed (30 dm³) with the product. D is incorrect — it adds all reactant volumes.

Answer

20 dm³

Answer

15 dm³

Answer

10 dm³

Answer

30 dm³

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