Answer:
4.3125 moles
Explanation:
The equation for the reaction between Fe and O₂ is given by;
4Fe + 3O₂ → 2Fe₂O₃
Therefore, 4 moles of Fe reacts with three moles of oxygen gas to form 2 moles of Fe₂O₃.
Therefore;
- Mole ratio of Fe to O₂ is 4 ; 3
- Moles of O₂ = Moles of Fe × 3/4
- Thus, given the number of moles of iron, Fe as 5.75 moles;
- Moles of Oxygen gas = 5.75 moles × 3/4
= 4.3125 moles
Therefore, moles of oxygen gas that will react will 5.75 moles of Fe will be 4.3125 moles
