If 3.91 moles of H2 were used, how many moles of NH3 would be made? Use the following equation for the problem: N2 + 3H2 —> 2NH3

Question

Help me with this quick! It’s in a test and I need to show my work

Answer 1

Hello, Bree,

The balanced equation

N2 + 3H2 —> 2NH3

tells us that we'll get 2 moles of NH₃ for every 3 moles of H₂.

We can make this into a conversion factor:

(2 moles NH₃)/(3 moles H₂)

If we have 3.91 moles of H_2,

(3.91 moles H₂)*((2 moles NH₃)/(3 moles H₂)) = 7.82 moles NH₃.

Bob