Iron is a transition element.

1. (a)State two physical properties of iron that are typical of a transition element. 1. 2.[2]
2. (b)Name an industrial process that uses iron as a catalyst.[1]
3. (c)(i)Iron(II) sulfate thermally decomposes to form iron(III) oxide, sulfur dioxide and sulfur trioxide. 2FeSO4(s) -> Fe2O3(s) + SO2(g) + SO3(g) Explain how the equation shows that this reaction involves oxidation.[1]
4. (c)(ii)A sample of 6.08 g of FeSO4 is heated until all the sample has thermally decomposed. Calculate the volume of sulfur dioxide formed, SO2(g), in dm³, measured at room temperature and pressure. volume of sulfur dioxide ............................................................ dm³[3]
5. (d)Iron(III) oxide reacts with dilute sulfuric acid to make iron(III) sulfate, Fe2(SO4)3. Construct the equation for this reaction.[1]
6. (e)Describe a chemical test that can be used to distinguish between aqueous solutions of iron(II) sulfate and iron(III) sulfate. chemical test .......................................................................................... result with iron(II) sulfate ......................................................................... result with iron(III) sulfate .........................................................................[2]