For the following reaction, if you have 13.2 g of CO and 42.7g of Fe2O3, which is the limiting reagent with regards to Fe production?

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

is the limiting reagent and is the excess reagent.

Explanation:

To calculate the moles :

The given balanced equation is :

According to stoichiometry :

3 moles of require = 1 mole of

Thus 0.471 moles of will require=  of

As given amount of is more than the required amount , it is the excess reagent.Thus is the limiting reagent as it limits the formation of product.