Write the equation for the reaction of burning iron (III). Calculate how much oxygen

Write the equation for the reaction of burning iron (III). Calculate how much oxygen is required to completely burn 560 g of iron.

Let’s write the reaction equation:

4Fe + 3O2 (t) = 2Fe2O3

Let’s find the amount of iron substance:

v (Fe) = m (Fe) / M (Fe) = 560/56 = 10 (mol).

According to the reaction equation, 4 mol of Fe reacts with 3 mol of O2, therefore:

v (O2) = v (Fe) * 3/4 = 10 * 3/4 = 7.5 (mol).

Thus, the required mass of oxygen:

m (O2) = v (O2) * M (O2) = 7.5 * 32 = 240 (g).

Answer: 240 g.