If 2 mol Li solid reactants with 1.5 mole N₂ gas, how many moles of Li₃N solid forms? 6Li (s) + N₂(g) --> 2Li₃N (s)?

If 2 mol Li solid reactants with 1.5 mole N₂ gas, how many moles of Li₃N solid forms?


6Li (s) + N₂(g) --> 2Li₃N (s)

Roger the Mole2021-04-07T03:14:12Z

2 moles of Li would react completely with 2 x (1/6) = 1/3 mole of N2, but there is more N2 present than that, so N2 is in excess and Li is the limiting reactant.

(2 mol Li) x (2 mol Li₃N / 6 mol Li) = 2/3 mol Li₃N