Question Detail
Question
You are provided with 1.00 mol of Mg and 0.252 mol of iron (III) oxide. The balanced equation for the reaction is 3Mg + Fe₂O₃ → 3MgO + 2Fe. What is the limiting reactant for the production of MgO?
Correct Answer
Option B is the correct answer.
Detailed Explanation
From the balanced equation, 3 moles of Mg react with 1 mole of Fe₂O₃. For 0.252 moles of Fe₂O₃, the required moles of Mg are 3 × 0.252 = 0.756 moles. Since 1.00 mol of Mg is available (more than 0.756 mol), Fe₂O₃ is the limiting reagent.
Hint
Calculate the amount of one reactant needed to completely react with the given amount of the other reactant.