Question

How many moles of nitrogen (${\text{N}}_2$) are required to produce 10 moles of ammonia (${\text{NH}}_3$) by reaction with hydrogen (${\text{H}}_2$)?

• A. 5

Answer 1

The correct option is A 5
The chemical reaction involved in the production of ammonia (${\text{NH}}_3$) from nitrogen (${\text{N}}_2$) and hydrogen (${\text{H}}_2$) is :

$N_2\left(g\right)+3H_2\left(g\right)\to 2{\mathrm{NH}}_3\left(g\right)$

In the given reaction 1 mole of ${\text{N}}_2$ is required to produce 2 moles of ${\text{NH}}_3$.

Hence, to produce 10 moles of ${\text{NH}}_3$ no. of moles of ${\text{N}}_2$ required = $\frac{10}{2}\times 1$ = 5.

Hence, the correct answer is 5.