Question

When metallic aluminum is added to a solution containing iron(ii) sulfate a reaction occurs. what species is being oxidized in the overall reaction? when metallic aluminum is added to a solution containing iron(ii) sulfate a reaction occurs. what species is being oxidized in the overall reaction? fe2+(aq) so42−(aq) al(s) al3+(aq)?

Answer 1

The Balance equation is as follow,

2 Al + 3 FeSO₄ → Al₂(SO₄)₃ + 3 Fe

Oxidation Number of elements in reactants,

Al = 0
Fe = +2
SO₄ = -2

Oxidation Number of elements in products,

Al = =3
Fe = 0
SO₄ = -2
Result:
As the oxidation state of Al has changed from 0 to +3, means it has lost 3 electrons so it is oxidized.
And the oxidation state of Fe has changed from +2 to 0, so it has gained 2 electrons, hence it is reduced.