The following data was collected when a reaction was performed experimentally in the laboratory. Reaction Data
Reactants Products
Fe2O3 Al Al2O3 Fe
Starting Amount in Reaction 3 moles 5 moles ? ?

Determine the maximum amount of Fe that was produced during the experiment. Explain how you determined this amount

Ans: Maximum amount of Fe produced = 5 moles = 280 g

The given reaction is:

Fe2O3 + 2Al → Al2O3 + 2Fe

Moles of Fe produced with respect to Fe2O3:

Based on stoichiometry, 1 mole of Fe2O3 produces 2 moles of Fe

Therefore, for the given 3 moles of Fe2O3, amount of Fe produced

= 3*2  = 6 moles

Moles of Fe produced with respect to Al:

Based on stoichiometry, 1 moles of Al produces 1 mole of Fe

Therefore, for the given 5 moles of Al, amount of Fe produced = 5 moles

Here, since Al produces less moles of Fe, Al will be the limiting reagent. Therefore, maximum moles of Fe produced = 5 moles

Atomic mass of Fe = 56 g/mol

Mass of Fe produced = 5 moles * 56 g/mol = 280 g