Low-grade copper ores can be processed to produce aqueous solutions containing copper(II) ions. Scrap iron is then used to recover the valuable copper metal from these solutions.
Fe(s)+Cu2+(aq)→Fe2+(aq)+Cu(s) \text{Fe}(\text{s}) + \text{Cu}^{2+}(\text{aq}) \rightarrow \text{Fe}^{2+}(\text{aq}) + \text{Cu}(\text{s}) Fe(s)+Cu2+(aq)→Fe2+(aq)+Cu(s)Explain why this displacement reaction is described as a redox reaction. You must refer to electron transfer for both metal species in your answer.
110 exam-style questions on Edexcel GCSE Chemistry 5.1 Obtaining and using metals, covering 5.1.1 The reactivity series of metals, 5.1.2 Displacement reactions as redox reactions, 5.1.3 Extracting metals from ores by reduction, 5.1.4 Biological methods of metal extraction, 5.1.5 Resistance to oxidation and recycling metals, and 5.1.6 Life cycle assessment. Each one has a worked solution and a mark scheme showing where the marks go.