If you have 12 mol FeCl3 and 12 mol O2, which would be the limiting reactant? (The equation is 4 FeCl3 + 3 O2 → 2 Fe2O3 + 6 Cl2)

1 Answer
Mar 20, 2015

The limiting reactant would be your FeCl_3.

This is because you need 4 of mol FeCl_3 to produce 2 mol of Fe_2O_3 while only 3 mol of O_2 as the reaction proceed. So, you will exhaust first your FeCl_3 supply, therefore making it your limiting reactant.