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?\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?\na. 4fe + 3o₂ → 2fe₂o₃\nb. 3fe + 4o₂ → 2fe₂o₃\nc. 2fe + 4o₂ → 3fe₂o₃\nd. 3fe + 3o₂ → 4fe₂o₃\ne. 4fe + 4o₂ → 3fe₂o₃

Answer

Explanation:

Step1: Balance iron atoms

On the left - hand side, we have Fe and on the right - hand side we have $Fe_2O_3$. To balance Fe, we need to adjust the coefficients. In option A, on the left side we have 4 Fe atoms and on the right side in $2Fe_2O_3$ we have $2\times2 = 4$ Fe atoms.

Step2: Balance oxygen atoms

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

Answer:

A. $4Fe + 3O_2\rightarrow2Fe_2O_3$