Question

How many moles of N2 are needed to make 5.0 moles of NH3?

Answer 1

Answer:

The answer is "2.5 mole"

Explanation:

The reaction for producing $NH_3$ can be defined as follows:

Reaction:

$N_2+ 3H_2 \rightarrow 2NH_3$

According to the above reaction, to produce 2 moles of $NH_3$  we need 1 mole of nitrogen:

So, according to the question to produce 5.0 mole $NH_3$ the required $N_2$:

$\Rightarrow \ 5.0 \ mole \ of \ NH_3 \times \frac{1 \ mole\ of \ N_2}{2 \ mole \ of NH_3}\\\\\Rightarrow 5.0 \times \frac{1}{2}\\\\\Rightarrow 2.5\ mole$

To produce 5.0 mole $NH_3$  we need 2.5 mole $N_2$