If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
Oxidation and reduction are powerful ideas for thinking about how charge is transferred within a reaction. As we'll see, it is something of a hypothetical, but it is, nonetheless, very useful.
Introducing oxidation states, oxidation, and reduction. Some tips for remembering oxidation and reduction.
Trends in common oxidation states for main group elements.
Determining oxidation numbers in magnesium oxide and magnesium hydroxide.
Determining oxidation numbers in hydrogen peroxide and oxygen difluoride.
Finding the half reactions in a combustion reaction, and identifying what is getting oxidized and reduced.
For the reaction between Fe and HCl, identifying the half reactions and what is getting oxidized and reduced.
How to identify the oxidizing and reducing agents.
Assigning oxidation states for the decomposition of hydrogen peroxide, a disproportionation reaction.
How to balance a redox reaction in acid.
How to balance a redox reaction in base.
A redox titration example: titrating an Fe(II) solution with potassium permanganate.