if 5.67 moles of Fe were produced, how many moles of CO2 would be produced?

Question

given the balanced equation of Fe2O3 + 3CO → 2Fe + 3CO2

If 5.67 moles of Fe were produced, how many moles of CO2 would be produced?

Answer 1

you can use the molar ratio from the balanced chemical equation to scale these over! On this one we have

5.67 mol Fe x (3 mol CO2 / 2 mol Fe) = 8.505 mol CO2

meaning that 8.505 moles of CO2 would be produced in this scenario

Answer 2

Balanced equation shows that for every 2 moles of Fe produced, 3 moles of CO₂ are also produced. In this case, it becomes a simple ratio equation, the ratio of the moles of product in the balanced equation being equal to the ratio of the moles of products that are actually produced:

 

2 moles Fe      =    5.67 moles Fe

3 moles CO₂         x moles CO₂

 

solve for x.