Question

The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is ______.

Options

• 10

• 20

• 30

• 40

Answer 1

The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is 30.

Explanation:

In the Haber’s process, the balanced equation is:

\[\ce{N2 + 3H2 -> 2NH3}\]

That means 3 moles of H₂ give 2 moles of NH₃.

So, to produce 20 moles of NH₃:

\[\ce{\frac{3}{2} \times 20}\] = 30 moles of H₂

Hence, 30 moles of hydrogen are needed.