Question

Construction crews sometimes use this reaction for welding underwater structures:

Fe2O3 + 2Al → Al2O3 + 2Fe

How many moles of iron (Fe) would be produced if 2.50 mol Fe2O3 react? Make sure to use the correct number of significant figures in your answer.

2.50 mol Fe2O3 =

Answer 1

5 moles of iron formed

Step-by-step explanation:

Given data:

Moles of iron formed = ?

Moles of iron oxide react = 2.50 mol

Solution:

Chemical equation:

Fe₂O₃ + 2Al → Al₂O₃ + 2Fe

Now we will compare the moles of iron with iron oxide.

Fe₂O₃ : Fe

1 ; 2

2.50 : 2×2.50 = 5 mol