Applicationelectrolyticells

Applicationelectrolyticells - Application of Electrolytic...

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Application of Electrolytic Cells Lesson 10
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Electrolysis describes what happens in an electrolytic cell and means to use electricity to make chemicals . Many elements are made by electrolysis
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Making Aluminum by Electrolysis Alcan (70,000 employees in 55 countries) Kitimat B.C. 2.7 MT 7 % world production
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Aluminum
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Aluminum Production by Electrolysis Name of the Ore imported from (Guinea and Brazil) Bauxite Al 2 O 3 . 3H 2 O Heating drives off the water Al 2 O 3 . 3H 2 O + Heat Al 2 O 3 + 3H 2 O Melting point of Bauxite is 2045 0 C
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Reduction of water You cannot reduce Aluminum in water ! It must be molten!
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C DC Power - + Al 3+ O 2- - Reduction Cathode Al 3+ + 3e - Al (s) Oxidation Anode Liquid Al floats to the top and is removed Oxygen gas Al 2 O 3(l) Cation Cathode Reduction Anion Anode Oxidation
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Au + CN - Electroplating Au plating a Cu penny Electroplating is the process of reducing a metal on to the surface of another Electrolyte: Must contain the ion of the metal that plates Cathode: The metal to be covered with a new metal
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Applicationelectrolyticells - Application of Electrolytic...

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