Oxidation, reduction and redox equations (AQA A level Chemistry)

3.1.7 Oxidation, reduction and redox equations

07:09 Determining the oxidation state of an element in a
compound or ion from the formula
27:07 Determining half-equations
38:10 Combining half- equations

Redox reactions involve a transfer of electrons from the reducing agent to the oxidising agent. The
change in the oxidation state of an element in a compound or ion is used to identify the element that
has been oxidised or reduced in a given reaction. Separate half-equations are written for the oxidation
or reduction processes. These half-equations can then be combined to give an overall equation for any
redox reaction.

Oxidation is the process of electron loss and oxidising
agents are electron acceptors.

Reduction is the process of electron gain and reducing
agents are electron donors.

The rules for assigning oxidation states.

Students should be able to:
•• work out the oxidation state of an element in a
compound or ion from the formula
•• write half-equations identifying the oxidation and
reduction processes in redox reactions
•• combine half-equations to give an overall redox
equation.

[sabriya]

thank you this was very helpful cuz i didnt understand in class and you made it so much easier to understand literally thank you a lot :)

[starup]

These videos are really helpful do you mind doing a video on the transition metals topic and rate equations and equilibrium constant for homogenous systems.

[kevinio]

45:31 is the NO3 in copper(II) nitrate a spectator ion?