When aqueous iron(II) sulfate is added to acidified potassium manganate(VII), the purple colour of the potassium manganate(VII) is lost. When aqueous potassium iodide is added to acidified potassium dichromate(VI), a dark brown solution is produced. Which row correctly shows the function of the iron(II) sulfate and the potassium dichromate(VI) in these reactions?
- Airon(II) sulfate: oxidising agent; potassium dichromate(VI): oxidising agent
- Biron(II) sulfate: oxidising agent; potassium dichromate(VI): reducing agent
- Ciron(II) sulfate: reducing agent; potassium dichromate(VI): reducing agent
- Diron(II) sulfate: reducing agent; potassium dichromate(VI): oxidising agent