Solving Stoichiometry Problems

Question

Molten iron and carbon monoxide are produced in a blast furnace by the reaction of iron (III) oxide and coke (pure carbon). If 25.0 mol of pure Fe₂O₃ is used, how many grams of iron can be produced? The reaction is:

Fe₂O₃ + 3C = 2Fe + 3CO

Answer 1

Fe2O3 + 3C ==> 2Fe + 3CO ... balanced equation

Use the mol ratio of Fe2O3 to Fe to solve the problem:

25.0 mol Fe2O3 x 2 mol Fe / mol Fe2O3 x 55.85 g Fe / mol Fe = 2793 g Fe = 2790 g (3 sig. figs.)