Electrolysis of Copper sulphate solution/Sodium Chloride solution/Aluminium Metal 0.0 / 5 ? ChemistryElectrolysisGCSEEdexcel Created by: HarryCreated on: 07-06-14 20:38 What are the uses of Chlorine? Used to make the polymer PVC, reacted with sodium hydroxide to make bleach, used to kill bacteria in pools 1 of 16 What are the uses of Hydrogen? Is reacted with vegetable oils in the presence of a nickel catalyst to make margarine, is reacted with chlorine to make hydrogen chloride gas 2 of 16 What is the colour of chlorine gas? Green 3 of 16 Why is the electrolysis of brine very important? We can get three valuable products: Chlorine, Hydrogen and Sodium Hydroxide 4 of 16 What is brine? A concentrated sodium chloride solution 5 of 16 What is used at the cathode in the electrolysis of brine? Hydrogen gas 6 of 16 What is used at the anode in the electrolysis of brine? Chlorine gas 7 of 16 What do we use at electrodes for the electrolysis of copper sulfate? Carbon 8 of 16 What do we get at the cathode in the electrolysis of copper sulfate? Copper -> seen as red/brown solid 9 of 16 What do we use in the electrolysis of aqueous solutions? A Hoffman Voltameter 10 of 16 Which ore is Aluminium found in? Bauxite 11 of 16 What is used to lower the melting point of Aluminium? Cryolite 12 of 16 Why does the extraction of aluminium metal become costly? Needs a lot of electricity, hence needing a lot of energy to produce 13 of 16 Where is aluminium metal produced and what is it tapped off as in the extraction of aluminium? It forms at the cathode and is tapped off as a molten liquid 14 of 16 What is produced at the anode in the extraction of aluminium? Oxygen 15 of 16 What are the uses of aluminium? Aeroplane manufacture (low density), over head electric cables (good conductor of electricity), window frames (doesn't rust) 16 of 16
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