Question

The following two reactions are important in the blast furnace production of iron metal from iron ore (Fe2O3): 2C(s) + O2(g) → 2CO(g) Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g) Using these balanced reaction, how many moles of O2 are required for the production of 5.35 kg of Fe?

Answer 1

1 mole of O₂ is needed to produce 2 moles of CO

3moles of CO, 1.5moles of O₂ is needed

for 2moles of Fe, 1.5 moles of O₂ is needed

for 1mole of Fe, 0.75 moles of O₂ is required

moles of Fe=5350/55.8=95.88 moles

therefore the moles of O₂ needed =95.88*0.75 =71.97 moles