Slides in this set

Slide 1

Preview of page 1

Electrolysis…read more

Slide 2

Preview of page 2

· Process using electricity to break down
ionic compounds into elements
· Electricity passed through a molten ionic
· The substance broken down =
· The electric circuit has two electrodes
· Electrodes often made of an inert
substance so it does not react with
products…read more

Slide 3

Preview of page 3

· The positve electrode is called the anode
· The negative electrode is called the
· The ions in the electrolyte move to the
electrodes where they are discharged to
produce elements…read more

Slide 4

Preview of page 4

Electrolysis of Lead Bromide
· Lead bromide Lead + Bromine
· Positive ions attracted to cathode where
they form metals or hydrogen depending on
· Negative ions attracted to anode where they
lose their charge to form non metallic…read more

Slide 5

Preview of page 5

O Changes at the electrode
I · Oxidation is loss of electrons
· Reduction is gain of electrons
L · At anode, negative ions lose
electrons (this is oxidation)
R · Represent changes at electrodes
using half equations
G…read more

Slide 6

Preview of page 6

Aqueous Solutions
· Water contains hydrogen ions, H+, and
hydroxide ions, OH-
· Hydrogen is produced at the cathode if
the other positive ions are more reactive
than hydrogen
· Oxygen is usually produced at the anode.
However if solution contains a halide
ion, a halogen will be produced…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Slide 10

Preview of page 10
Preview of page 10


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »