Redox titration A level chemistry? Redox titration of potassium manganate(VII) with iron(II) ions? Redox titration of sodium thiosulfate with iodine? 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.

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 – Y12 recap question about how to write ionic half equations
Slides 4 – 5: hidden slides so that you can print the questions for the students
Slides 6 – 7: the answer with working out
Slide 8 – a CEEA video showing the redox titration of MnO4- with Fe2+. The video is embedded in the PowerPoint
Slide 9 – an explanation of how redox titrations differ from acid-base titrations
Slide 10 – the chemistry of the redox titration of potassium manganate(VII) with iron(II) ions explained in small chunks
Slide 11 – explanation of why potassium dichromate(VI) should only be used in a redox titration with an indicator
Slides 12 – 14: worked example 1 – redox titration calculation. All the working out is included
Slides 15 – 17: worked example 2 – calculating the percentage by mass of iron in an iron tablet. All working out included
Slides 18 – 20: learning pit stop questions to test students’ understanding so far. Answers animate on the screen when you click
Slide 21 – y12 recap question on how to write the overall ionic equation for the reaction of ethanedioic acid and manganate(VII) ions
Slides 22 – 23: answer with working out
Slide 24 – annotated concentration-time graph for the reaction of MnO4- with (COOH)2
Slide 25 – notes and observations for the titration
Slides 26 – 32: determining the number of moles of water of crystallisation using redox titration. There is a method included so the students can do the titration; if not, there are sample results included. The working out required to solve the problem is included in the resource
Slides 33 – 36: redox titration of sodium thiosulfate with iodine. The section includes an explanation behind the chemistry of the reaction, an embedded YouTube video demonstrating the titration and the importance of the starch indicator
Slides 37 – 39: Determining the percentage of copper(II) ions in a sample of hydrated copper(II) sulfate. Practical method included
Slide 40: learning pit stop questions to test students’ understanding so far. Answers animate on the screen when you click
Slides 41 – 47: exam questions with mark scheme answers included with this resource

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