the decomposition of ionic liquid electrolyte using an electrical current
1 of 9
define the term inert
unreactive
2 of 9
what is the diffrence between the anode and cathode?
cathode is negative so attracts positive ions, anode is positive so attracts negative ions
3 of 9
describe the electrolysis of lithium chloride
In fume cupboard. Graphite electrodes. Cl- ion loses elctron at anode, two Cl ions form Cl2 molecule. Bubbles of green chlorine gas form at the anode. Li+ ions gain electron at cathode and becomes Li atom. Silvery coloured beads of lithium metal sink
4 of 9
describe the electrolysis of lead(II) bromide
In a fume cupboard. Graphite electrodes. Br- ions lose electron at anode, forms Br2 molecule. Red/brown bromine gas form at anode. Lead ions (Pb2+) gains 2 electrons at cathode and forms Pb atoms. Silver coloured beads of lead metal sink to bottom
5 of 9
What is the ore from which alumina is extracted
Bauxite
6 of 9
Describe the electrolysis of aluminium from alumina
.
7 of 9
Why do the anodes need to be replaced periodically?
oxygen produced reacts with the carbon in the graphite to form CO2 and so the anodes will wear away.
8 of 9
What are the benefits of recycling aluminium over extracting new aluminium
Saves resources, Saves energy, Prevents waste going to landfill and therefore reduces CO2 emissions, Costs less
9 of 9
Other cards in this set
Card 2
Front
define the term inert
Back
unreactive
Card 3
Front
what is the diffrence between the anode and cathode?
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