If 12 mol of lithium were reacted with excess nitrogen gas, how many moles of lithium nitride would be produced?
The balanced reaction that describes the reaction between lithium and nitrogen to produce lithium nitride is expressed N2 + 6Li = 2Li3N. Hence for 12 moles of lithium given, there are 4 moles of lithium nitride produced. Answer to this problem is 4 moles.
Answer: 4 moles
Explanation:
\(6Li+N_2\rightarrow 2Li_3N\)
From the balanced chemical equation, it can be seen that 6 moles of lithium react with 1 mole of nitrogen to give 2 moles of lithium nitride.
Now as nitrogen is in excess, lithium is the limiting reagent as it limits the formation of products.
As 6 moles of lithium produce 2 moles of lithium nitride.
12 moles of lithium will produce=\(\frac{2}{6}\times 12=4moles\) of lithium nitride.