LC CHEMISTRY- OXIDATION AND REDUCTION

REBECCAS LC CHEMISTRY- OXIDATION AND REDUCTION KNOWT

Oxidation

• the addition of oxygen

• the loss of electrons

• increase in oxidation number

Reduction

• removal of oxygen

• gain of electrons

• addition of hydrogen

Oxidising Agent

causes another substance to become oxidised, and in the process, is reduced

Reducing Agent

causes another substance to be reduced, and in the process, is oxidised

oxidation number

the charge the atom or ion has if the electrons are distributed accordingly to certain rules

oxidation number of a pure element

0

oxidation number of fluorine (F)

-1

oxidation number of oxygen (O) in an oxide

-2

oxidation number of oxygen in OF₂

2

oxidation number of oxygen in a peroxide

-1

oxidation number of oxygen in a super-peroxide

-1/2

oxidation number of hydrogen (H) when bonded to a non-metal

1

oxidation number of hydrogen (H) when bonded to a metal (metalhydride)

-1

oxidation number of halogens

-1

oxidation number of alkali metals group 1

+1

oxidation number of alkali earth metals group 2

+2

oxidation sum of oxidation numbers in a complex ion

its equal to the charge of the ion