Question

in an experiment 0.3 mole of Fe2O3 was heated with 1.02 carbon monoxide to give iron according to the reaction Fe2O3+3Co gives 2Fe +3Co2 what is the limiting reaction and what is the theoritical yield of Fe​

Answer 1

Given : In an experiment, 0.3 mole of Fe2O3 was heated with 1.02 carbon monoxide to give iron according to the reaction..

Fe2O3 + 3CO ⇒2Fe + 3CO2

To find : The limiting reagent and theoretical yield of Fe.

we see , one mole of Fe2O3 reacts with three moles of carbon monoxide to provide 2 moles of iron and three moles of carbon dioxide.

so, 0.3 mole of Fe2O3 reacts with 0.3 × 3 = 0.9 mole of carbon monoxide.

but here amount of carbon monoxide = 1.02 mole (excess)

so, Fe2O3 is the limiting reagent.

as Fe2O3 is the limiting reagent, reaction give priority to Fe2O3. it will occurs until Fe2O3 is completely finished.

one mole of Fe2O3 forms two moles of Fe

so, 0.3 mole of Fe2O3 forms 0.6 mole of Fe.

Therefore theoretical yield of Fe = 0.6 mole