Limitations of Cell Potentials

Redox & Electrode Potentials (OCR A Level Chemistry)

8 Full Lesson Bundle which covers the redox and electrode potential section of the OCR Energy Chapter: Lesson 1 & 2: Redox Reactions Lesson 3& 4: Redox Titrations Lesson 5&6: Standard Electrode & Cell Potentials Lesson 7: Limitations of Cell Potentials Lesson 8: Storage & Fuel Cells Learning Objectives: Lesson 1: LO1: To identify the oxidation numbers of elements in ions and compounds LO2: To construct half-equations from redox equations LO3: To explain and use the terms oxidising agent and reducing agent Lesson 2: LO1: To understand that the overall increase in oxidation number will equal the overall decrease in oxidation number LO2: To construct balanced half equations and overall redox equations from reactions in acidic conditions LO3: To construct balanced half equations and overall redox equations from reactions in alkaline conditions (stretch & challenge) Lesson 3: LO1: To understand what a redox titration is. LO2: To describe the practical techniques and procedures used to carry out redox titrations involving Fe2+ /MnO4- LO3: To calculate structured titration questions based on experimental results of redox titrations involving Fe2+ /MnO4- and its derivatives Lesson 4: LO1: To describe the practical techniques and procedures used to carry out redox titrations for I2/S2O32- LO2: To calculate structured titration questions based on experimental results of redox titrations involving I2/S2O32- and non familiar redox systems LO3: To calculate non-structured titration questions based on experimental results of I2/S2O32- Lesson 5: LO1: To describe techniques and procedures used for the measurement of : i) Cell potentials of metals or non-metals in contact with their ions in aqueous solution ii) Ions of the same element in different oxidation states in contact with a Pt electrode Lesson 6: LO1: To use the term standard electrode potential E⦵ including its measurement using a hydrogen electrode LO2: To calculate a standard cell potential by combining two standard electrode potentials LO3: To predict the feasibility of electrode potentials to modern storage cells Lesson 7: LO1. To understand the limitations of predicting the feasibility of a reaction using cell potentials due to kinetics and non-standard conditions LO2. To explain why electrochemical cells may not work based on the limitations of using cell potentials Lesson 8: LO1: To understand the application of the principles of electrode potentials to modern storage cells LO2: To explain that a fuel cell uses the energy from a reaction of a fuel with oxygen to produce a voltage LO3: To derive the reactions that take place at each electrode in a hydrogen fuel cell The teacher will be able to check students have met these learning objectives through starter activities, discussion questions, mini AfL tasks and practice questions for students to complete ***Declaimer: Please refrain from purchasing this popular resource for an interview lesson or a formal observation. This is because planning your own lessons, including using your own lesson PowerPoints, is a fundamental skill of a qualified/unqualified teacher that will be assessed during the scenarios outlined above***