Question

Using the equation, 4Fe + 3O2 Imported Asset 2Fe2O3, if 8 moles of iron and oxygen from the air were available, how many moles of iron (III) oxide would be produced?

4 moles

5 moles

6 moles

8 moles

Answer 1

Answer: The correct answer is 4 moles.

Step-by-step explanation:

For the given chemical reaction:

`4Fe+3O_2\rightarrow 2Fe_2O_3`

Oxygen from air is available which means it is present in excess. Iron is considered as a limiting reagent because it limits the formation of products.

By Stoichiometry of the reaction:

4 moles of iron produces 2 moles of iron oxide.

So, 8 moles of iron will produce =
`(2)/(4)* 84mol` of iron oxide.

Hence, the correct answer is 4 moles.

Answer 2

From the balanced chemical equation,
4Fe + 3O₂ --> 2Fe₂O₃
it is evident that for every 4 moles of Fe (iron), 2 moles of iron (III) oxide will be formed. Using the same ratio,
8 moles of iron x (2 moles Fe₂O₃ / 4 moles of Fe)
= 4 moles Fe₂O₃
Therefore, the answer is 4 moles.