Lithium and nitrogen react in a combination reaction to produce lithium nitride:
6Li (s) + N₂(g) -2Li₃N (s)
How many moles of lithium nitride are produced when 0.450 mol of lithium react in this fashion?

Question

Quizplus · Accepted Answer

From the balanced chemical equation, we can see that the mole ratio between lithium and lithium nitride is 6:2, or simplified to 3:1. This means that for every 3 moles of lithium used, 1 mole of lithium nitride is produced.

Therefore, if we have 0.450 mol of lithium, we can use the mole ratio to find the moles of lithium nitride produced:
0.450 mol Li x (1 mol Li3N/3 mol Li) = 0.150 mol Li3N

Therefore, the answer is choice C, 0.150.

Lithium and Nitrogen React in a Combination Reaction to Produce