Producers: Alberta Advanced Education

Explains why corrosion is a major concern of industry and consumers. Shows various everyday examples of corrosion reactions and how they can be prevented. The five-step method for writing these reactions is used throughout the program.

Explains Le Châtelier’s principle and shows how his work is used to identify factors that can affect equilibrium concentrations. Demonstrates how equilibrium can be shifted by changing temperature or the concentrations of various reagents.

Emphasizes the usefulness of redox titration as an analytical technique. Examines titration procedures and techniques and explains how to determine the endpoint of a redox titration.

Shows the complete cycle of a redox titration. Analysis of the data covers: predicting the endpoint colour change; standardizing the titrant; titrating the unknown; and stoichiometric analysis of the data.

Detailed graphics explain oxidation numbers within molecules and complex ions. Examples show the rules for assigning oxidation numbers and for writing half-reactions using oxidation numbers.

Generates oxidation and reduction half-reactions using oxidation numbers and rules from the previous program. Electrons are balanced and the two half-reactions added to obtain the balanced overall reaction.

Explains how electrical energy is harnessed from redox reactions. Studies simple voltaic cells and explains their function. Discusses commercial cells in terms of their usefulness and limitations, electrochemical corrosion and cathodic protection.

Discusses reasons for a standard half-cell potential and explains the electric potentials on the reduction half-reaction table. This table is used to predict net voltages from redox reactions, and if the reaction is spontaneous or non-spontaneous.

Illustrates multi-step energetics problems with various real-life situations. Stresses the steps that should be applied in problem solving: identify changes; relate known to unknown; calculate the answer; and check the answer.

Examining commercial primary cells show: electrolyte composition; oxidation and reduction half-reactions; and anode and cathode. Experiments on primary cells arranged in a series show that the total voltage is the sum of the cells in the series.