Question

Iron (III) oxide is reduced to iron by carbon monoxide.

a) calculate the mass of iron that could be obtained by the reduction of 800 tonnes of iron (III) oxide.

b) what volume of carbon dioxide, measured at room temperature and pressure, would be obtained by the reduction of 320g of iron (III) oxide?​

Answer 1

Fe2O3 + 3CO → 2Fe + 3CO2

molar mass of Fe2O3 ≈ 159.7 g

molar mass of 2Fe ≈ 111.7 g

159.7g of Fe2O3 gives 111.7g of Fe.

so, 1g of Fe2O3 gives 111.7/159.7 g of Fe.

⭐ mass of iron that could be obtained by the reduction of 800 tonnes of iron (iii) oxide (ie., Fe2O3) is

800 × 111.7/159.7

= 800 × 0.7

= 560 tonnes.