Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Explain the terms: redox, oxidation number, half-reaction, oxidising agent and reducing agent for simple redox reactions. Construct redox equations using relevant half equations or oxidation numbers. Interpret and make predictions for reactions involving electron transfer.

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Describe simple half cells made from (i) metals or non-metals in contact with their ions in aqueous solution;(ii) ions of the same element in different oxidation states. Describe how half cells can be combined to make an electrochemical cell.

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Copper–zinc electrochemical cell

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Standard hydrogen half cell

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Fe 3+ /Fe 2+ half cell

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Define the term: standard electrode (redox) potential, E θ. Describe how to measure standard electrode potentials using a standard hydrogen electrode. Calculate a standard cell potential by combining two standard electrode potentials.

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Measuring the standard electrode potential of a Zn/Zn 2+ half cell

Week 25 © Pearson Education Ltd 2009 This document may have been altered from the original Predict, using standard cell potentials, the feasibility of reactions. Consider the limitations of predictions made using standard cell potentials, in terms of kinetics and concentration.