IB Topic 9 Redox
Essential Ideas:
Redox (reduction – oxidation) reactions play a key role in many chemical and biochemical processes.
Voltaic Cells convert chemical energy to electrical energy and electrolytic cells convert electrical energy to chemical energy.
Objectives:
Essential Ideas:
Redox (reduction – oxidation) reactions play a key role in many chemical and biochemical processes.
Voltaic Cells convert chemical energy to electrical energy and electrolytic cells convert electrical energy to chemical energy.
Objectives:
- Understand the terms oxidation and reduction in terms of the loss/ gain of hydrogen/ oxygen and the loss/ gain of electrons
- Work out oxidation numbers for elements in compounds and ions
- Understand that transition metals and some main group elements can have more than one oxidation number
- Understand how to name compounds and ions using oxidation numbers
- Understand what is meant by a redox reaction
- Understand oxidation and reduction in terms of changes in oxidation numbers
- Work out whether an element has been oxidized or reduced in a given reaction
- Understand what is meant by an oxidizing agent and a reducing agent and identify them in reactions
- Understand what is meant by half-equations and be able to balance them
- Combine half-equations to produce an overall redox equation
- Balance redox equations in acidic or neutral solutions using half-equations
- Understand that metals can be arranged in an activity series according to how easily that can be oxidized
- Use the activity series to predict the feasibility of a redox reaction
- Solve problems involving redox titrations
- Understand what is meant by biochemical oxygen demand (BOD)
- Use the Winkler method to calculate biochemical oxygen demand
- Understand how electricity is produced in a voltaic cell
- Describe the features of an electrolytic cell
- Understand the differences between an electrolytic cell and a voltaic cell
- Understand how current is conducted during electrolysis
- Predict the products of electrolysis of a molten salt
- Write half-equations for the reactions occurring at the electrodes during electrolysis
Assignments and Labs_Redox Lab
Redox Titration Voltaic Cells Virtual Lab Handout Voltaic Cells Virtual Lab part 1 with Hydrogen Voltaic Cells Virtual Lab part 2 concentration Electrolytic Cell Virtual Lab Metal Activity Series On line lab Directions |
Notes/ PP |
Here are the instructions and web links for today to learn about electrochemical cells.
Electrochemical cells
Electrochemical cells