Exam Style Question - 5

Question: For the reaction 2Fe³⁺(aq) + 2I^-(aq) → 2Fe²⁺(aq) + I₂(aq), identify the species oxidised, the species reduced, the oxidising agent and the reducing agent.Iron changes from +3 in Fe³⁺ to +2 in Fe²⁺. Its oxidation state decreases, so Fe³⁺ is reduced. The half-equation is Fe³⁺ + e^- → Fe²⁺.Iodine changes from -1 in I^- to 0 in I₂. Its oxidation state increases, so I^- is oxidised. The half-equation is 2I^- → I₂ + 2e^-.An oxidising agent is an electron acceptor, so it is reduced itself. Fe³⁺ is the oxidising agent.A reducing agent is an electron donor, so it is oxidised itself. I^- is the reducing agent.