Oxidation, reduction and redox reactions 7

used for reactions in which oxygen is used Oxidation is the process of electron loss and oxidising agents are electron acceptors.

a reaction in which oxygen is removed Reduction is the process of electron gain and reducing agents are electron donors.

when oxidation and reduction both happen at the same time

oxidation is loss and reduction is gain

used to see what has been oxidised or reduced in a redox reaction

A reagent that oxidies (removes electrons from) another species

A reagent in which an atom or a group of atoms gain electrons

An equation for a redox reaction which considers just one of the species involved and shows explicitly the electrons transferred

+1

+2

Usually-2 Unless peroxide H2O2 -1 Unless in OF2 +2

+1 Unless metal hydroxide

-1

Usually -1 Except with O or F when its positive

Each oxygen oxidation number is 1/2 Potassium us heated in oxygen KO2 ( colour is orange or yellow) / K2O2 / K2O Single covalent bond between the oxygen atom and negative charge resulting from potassium atom 4KO2 + 2CO2 ➡️ 2K2CO3 + 3O2

CO3 2-

SO4 2-

NO3-