Electrolysis Of Aluminium Flashcards
1
Q
Aluminium or
A
Bauxite
2
Q
Bauxite
A
Pure aluminium oxiide
Al2o3
3
Q
What does cryolite do
A
Aluminium oxide melting point 2000
Dissolve aluminium in Molten cryolite
Lower temperature down to 900
Cheaper and easier
Electrodes graphite good conductor of electricity
4
Q
What is cryolite
A
Less common ore of aluminium
5
Q
Graphite electrodes
A
Oxygen react to form carbon dioxide two
6
Q
How is electrolysis expensive
A
Electrolysis uses lots of energy
Energy needed to heat to 900
Disappearing positive electrode frequent replacement
