Question

In the reaction

Fe2O3 + 3 CO --> 2 Fe + 3 CO2,

What is the total number of moles of CO used to produce 112 grams of iron?

Answer 1

3 moles of CO are needed

Step-by-step explanation:

Given data:

Number of moles of CO used = ?

Mass of Fe produced = 112 g

Solution:

Chemical equation:

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Number of moles of Fe:

Number of moles = mass/ molar mass

Number of moles = 112 g/ 55.85 g/mol

Number of moles = 2.00 mol

Now we will compare the moles of iron and CO.

Fe : CO

2 : 3

Thus, 3 moles of CO are needed.