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The number of moles of hydrogen molecule required to produce 20 moles of ammonia through Haber’s process is:

1. 10
2. 20
3. 30
4. 40

Correct answer: 30

Solution

In the Haber process, the balanced equation is N2 + 3H2 → 2NH3. To produce 2 moles of ammonia, 3 moles of hydrogen are required. For 20 moles of ammonia, (20 × 3) / 2 = 30 moles of hydrogen are needed.

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