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In Haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture under the aforesaid condition in the end?

1. 20 litres ammonia, 25 litres nitrogen, 15 litres hydrogen
2. 20 litres ammonia, 20 litres nitrogen, 20 litres hydrogen
3. 10 litres ammonia, 25 litres nitrogen, 15 litres hydrogen
4. 20 litres ammonia, 10 litres nitrogen, 30 litres hydrogen

Correct answer: 10 litres ammonia, 25 litres nitrogen, 15 litres hydrogen

Solution

In the Haber process, the reaction is N₂ + 3H₂ → 2NH₃. Initially, 30 L of N₂ and 30 L of H₂ are taken. The limiting reagent is H₂, as it requires 3 times the amount of N₂. For 50% yield, 15 L of H₂ reacts with 5 L of N₂ to form 10 L of NH₃. Remaining gases are 25 L of N₂ and 15 L of H₂.

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