Electrochemistry

6.1 Redox processes: electron transfer and changes in oxidation number (oxidation state)
Learning outcomes
Candidates should be able to:
1 calculate oxidation numbers of elements in compounds and ions
2 use changes in oxidation numbers to help balance chemical equations
3 explain and use the terms redox, oxidation, reduction and disproportionation in terms of electron transfer
and changes in oxidation number
4 explain and use the terms oxidising agent and reducing agent
5 use a Roman numeral to indicate the magnitude of the oxidation number of an element