select the correct answer.\niron reacts with atmospheric oxygen to form iron oxide or ferric oxide. look at…

select the correct answer.\niron reacts with atmospheric oxygen to form iron oxide or ferric oxide. look at the chemical equation for this reaction:\nfe + o₂ → fe₂o₃\nthis equation is unbalanced. which of the following is the correct balanced equation for this reaction?\n\na. 4fe + 3o₂ → 2fe₂o₃\nb. 3fe + 4o₂ → 2fe₂o₃\nc. 2fe + 4o₂ → 3fe₂o₃\nd. 3fe + 3o₂ → 4fe₂o₃\ne. 4fe + 4o₂ → 3fe₂o₃

select the correct answer.\niron reacts with atmospheric oxygen to form iron oxide or ferric oxide. look at the chemical equation for this reaction:\nfe + o₂ → fe₂o₃\nthis equation is unbalanced. which of the following is the correct balanced equation for this reaction?\n\na. 4fe + 3o₂ → 2fe₂o₃\nb. 3fe + 4o₂ → 2fe₂o₃\nc. 2fe + 4o₂ → 3fe₂o₃\nd. 3fe + 3o₂ → 4fe₂o₃\ne. 4fe + 4o₂ → 3fe₂o₃

Answer

Explanation:

Step1: Check iron atoms

In $Fe_2O_3$, there are 2 iron atoms. In option A, on the left - hand side, we have 4 iron atoms and on the right - hand side in $2Fe_2O_3$, we have $2\times2 = 4$ iron atoms.

Step2: Check oxygen atoms

In $O_2$, oxygen is diatomic. In option A, on the left - hand side, we have $3O_2$ which means $3\times2=6$ oxygen atoms. On the right - hand side, in $2Fe_2O_3$, we have $2\times3 = 6$ oxygen atoms.

Answer:

A. $4Fe + 3O_2\rightarrow2Fe_2O_3$