Standard Electrode Potential | Feasibility (scan for video preview)

Standard electrode potential and Gibbs free energy? Standard electrode potential feasibility? Standard electrode potential and equilibrium constant? All this and more covered in this comprehensive lesson with questions and answers! This is a Year 13 A level lesson for Edexcel International Unit 5 – WCH15, but it can also be used for all UK exam boards. All the slides in this lesson are fully animated and include answers to every mini plenary question and exam question. The breakdown of the slides (which are best opened on Microsoft PowerPoint) is as follows:

Slide 1 - Title and 5-minute starter. The starter is a grid of four questions entitled ‘last week, last lesson, today’s learning and future learning’. Use this generic slide for all your lessons by simply changing the questions and the answers each time.
Slide 2 - Lesson objectives (see thumbnail image)
Slide 3 – a recap about spontaneity and total entropy change. Cold call a student to offer an answer
Slide 4 – hinge to the link between feasibility and electrode potentials
Slides 5 – 15: three worked examples which you can use to show students how to use electrode potentials to find out if a reaction is thermodynamically feasible. The examples get progressively harder, up to copper disproportionation
Slides 16 – 21: use this worked example to show students an alternative method to determine feasibility which involves reversing the equation for the oxidation electrode.
Slides 22 – 25: this final worked example is included to show students that a reaction which is not feasible can become feasible if non-standard conditions are used
Slide 26 – this slide serves as a conclusion for feasibility and electrode potentials
Slide 27 - learning pit stop questions to test students’ understanding so far. Answers animate on the screen when you click
Slides 28 – 30: three recap tasks which students can complete on mini whiteboards or in their books. Students must write down all the equations they remember relating to entropy, equilibrium constant and standard electrode potential
Slides 31 – 33: use this section to introduce students to the equation that links total entropy change, standard electrode potential and equilibrium constant
Slide 34 - learning pit stop questions to test students’ understanding so far. Answers animate on the screen when you click
Slides 35 – 44: exam questions with mark scheme answers included with this resource

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