First, lets balance the reaction equation: 4Fe + 3O₂ → 2Fe₂O₃ It is visible form the equation that 4 moles of Fe require 3 moles of O₂ Molar ratio Fe/O₂ = 4/3 = 1.33 Molar ratio O₂/Fe = 3/4 = 0.75 Now, we check the molar ratios present: Fe/O₂ = 6.8/8.9 = 0.76 O₂/Fe = 1.31
Thus, Iron is the limiting reactant because its ratio is not being fulfilled while the ratio of O₂ is surpassed.
