Matric IEB Chemistry: Electrochemistry

, Redox Reactions the transfer electrons
involving of




Oxidation Reduction
Loss of e's of e's
gain

OIL RIG
2 -
of e's

Oxidation
of


Loss Reduction is
is .



gain

Oxidation vs Reduction
Oxidized Reduced




.
1

Loss of e's 1 .

Gain of e's

2
Gain of 2
Loss of
Oxygen Oxygen
. .




3
Loss Gain
Hydrogen of
Hydrogen
3
.


of .




been
Reducing Agent : Substance that donates electronsHas oxidised , encourages
reduction of anothe

species

Substance that accepts electrons Has been reduced
Oxidising Agent : ,
encourages
oxidation of another

species.


Half Reactions


Oxidation : electrons
the
right
on




Ins .
In
ag + Ze

Oxidation number of
reducing agent In increases



Reduction :trans on




22
(2g 2 -
+


decreases
Oxidation number of the
oxidising agent C2


Metal Non
reactivity metal
reactivity
* *


Good Good
reducing agent oxidising agent