Question

If 3 moles of Fe2O3 react with 1.5 moles of CO, how many moles of each product are formed?

Answer 1

Fe2O3(s) + 3 CO(g) = 2 Fe(s) + 3 CO2(g)

So, under given conditions,

1 mole Fe and 1.5 mole CO2 is formed.

Answer 2

2moles  of $Fe$ and 3 moles of $CO2$ of each product are formed.

Explanation:

If 3 moles of $Fe2O3$ react with 1.5 moles of $CO,$

$Fe2O3(s) + 3 CO(g) ------ 2 Fe(s) + 3 CO2(g)$

so under the given condition

Here we have to find out is there any limiting reagent.

We have to divide the moles of each reactant by the coefficient in the balanced equation and then

For Fe2O3 we have 3 moles  so 3

For CO  we have 3 mol/3 =3moles.

So we conclude that $Fe2O3$ is the limiting reagent,In order to find out the theoretical yield of each product the original number of $Fe2O3$

$2 mol Fe2O3$ ×$2 mol Fe / 2 mol Fe2O3$ =$2 mol Fe will be formed$

and that of CO we will get

$2 mol Fe2O3$ x $3 mol CO2 / 2mol Fe2O3$=$3 mol CO2 will be formed$.