Question

al(s) + feso₄(aq) → al₂(so₄)₃(aq) + fe(s)
express your answers as integers separated by commas.

Explanation:

Step1: Balance Al atoms

On the left, there is 1 Al atom. On the right, there are 2 Al atoms in $\ce{Al2(SO4)3}$. So we put a coefficient of 2 in front of $\ce{Al(s)}$. Now the equation is: $2\ce{Al(s)} + \ce{FeSO4(aq)}
ightarrow \ce{Al2(SO4)3(aq)} + \ce{Fe(s)}$

Step2: Balance $\ce{SO4^{2-}}$ ions

On the right, there are 3 $\ce{SO4^{2-}}$ ions in $\ce{Al2(SO4)3}$. On the left, there is 1 $\ce{SO4^{2-}}$ ion in $\ce{FeSO4}$. So we put a coefficient of 3 in front of $\ce{FeSO4(aq)}$. Now the equation is: $2\ce{Al(s)} + 3\ce{FeSO4(aq)}
ightarrow \ce{Al2(SO4)3(aq)} + \ce{Fe(s)}$

Step3: Balance Fe atoms

On the left, there are 3 Fe atoms (from $3\ce{FeSO4}$). On the right, there is 1 Fe atom. So we put a coefficient of 3 in front of $\ce{Fe(s)}$. The balanced equation is: $2\ce{Al(s)} + 3\ce{FeSO4(aq)}
ightarrow \ce{Al2(SO4)3(aq)} + 3\ce{Fe(s)}$

The coefficients for $\ce{Al}$, $\ce{FeSO4}$, $\ce{Al2(SO4)3}$, $\ce{Fe}$ are 2, 3, 1, 3 respectively. But the question seems to ask for the coefficients in order (probably for the reactants and products as given in the equation: Al, FeSO₄, Al₂(SO₄)₃, Fe). So the integers are 2, 3, 1, 3. Wait, but the input box had a "1" and the problem says "Express your answers as integers separated by commas." Maybe it's the coefficients for each species in order. Let's check the original equation: $\ce{Al(s) + FeSO4(aq) -> Al2(SO4)3(aq) + Fe(s)}$. So the coefficients after balancing are 2 (Al), 3 (FeSO4), 1 (Al2(SO4)3), 3 (Fe). So the answer should be 2,3,1,3.

Wait, maybe the question is to balance the equation and give the coefficients in the order of the reactants and products as written. Let's confirm the balancing:

• Al: left 1, right 2 → coefficient 2 for Al.
• $\ce{SO4^{2-}}$: left 1 (in FeSO4), right 3 (in Al2(SO4)3) → coefficient 3 for FeSO4.
• Fe: left 3 (from 3 FeSO4), right 1 → coefficient 3 for Fe.
• $\ce{Al2(SO4)3}$: coefficient 1 (since we balanced Al and SO4, it's already 1).

So the balanced equation is $2\ce{Al} + 3\ce{FeSO4} = 1\ce{Al2(SO4)3} + 3\ce{Fe}$. So the coefficients are 2, 3, 1, 3.

Answer:

2,3,1,3