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Extraction of Aluminium by Electrolysis - ScienceAid   Log In via Login Sign Up HomeArticlesCommunityMy Profile   Home Random Browse Articles Community Log in Sign up Article Edit Discuss Home Chemistry Applied Extraction of Aluminium by Electrolysis Edited by Jamie (ScienceAid Editor), Taylor (ScienceAid Editor), SmartyPants, Sim and 1 other 4 Parts: The Ingredients Questions and Answers Referencing this Article Comments Please note that this article uses the British English spelling of aluminum, but this is exactly the same as aluminum - this is simply the North American English spelling. Contents 1 The Ingredients 1.1 The Process 1.2 Uses 2 Questions and Answers 2.1 How is aluminum extracted using electrolysis. please, can you help mate ;)? 3 Referencing this Article 4 Comments The Ingredients Aluminum has a very high melting point and strong bonding between atoms, so it doesn't readily dissolve in water. Instead, molten cryolite (Na3AIF6) is used. The Process The pure aluminum is attracted to the cathode, which is a lining of graphite. The oxygen is attracted to the anode, and bubbles through the solution. At the cathode, reduction takes place as electrons are gained: Al3+ + 3e- ® Al At the anode, oxidation takes place as electrons are lost: 2O2- ® O2 + 4e- At the anode also, the oxygen formed will react with the anode (which is made of carbon) to form carbon dioxide. This means the anodes must be frequently replaced. This process uses a lot of electricity and is expensive. Therefore, aluminum is much more expensive than other metals that are easier to extract (like iron, but its desirable characteristics mean that it is still widely used. Was this helpful? Yes | No| I need help Uses Aluminum is the most widely used metal after iron. It is mostly used in an alloy with another metal, this means it is mixed with another metal to produce another compound that has a certain desirable characteristic - like stainless steel. Was this helpful? Yes | No| I need help Some common uses of aluminum include making cars, trains, and bicycles. Because it's reasonably strong, but not too heavy, your aluminum bicycle won't break and won't be too difficult to ride. Some packaging like foil and cans are also made from aluminum. This is especially important in recycling since some soft drink cans are made of steel rather than aluminum - but they can be sorted using magnets. Cooking utensils are often made from aluminum because it is very good at conducting heat, and will warm the food evenly. Was this helpful? Yes | No| I need help Questions and Answers How is aluminum extracted using electrolysis. please, can you help mate ;)? Help me I really need help for my class work. I really need a lot of help Aluminum is extracted from aluminum oxide by a process called electrolysis. First of all, aluminum oxide needs to be in molten form to extract the aluminum ions. Aluminum oxide, however, has a high melting point. Therefore, aluminum oxide is dissolved in molten cryolite. Cryolite is a form of an aluminum compound that has a lower melting point that aluminum oxide. The steel case, used in electrolysis, is coated by graphite. Graphite is a form of carbon and acts at the negative cathode. The positive anodes are also made of graphite but are immersed in the molten cryolite solution. When electricity flows, Aluminum ions, from the aluminum oxide, are formed at the negative cathode and then sink to the bottom because they are heavier than the cryolite solution. Then, the aluminum that has sunk to the bottom is collected in liquid form. On the other hand, the oxygen, from the aluminum oxide, forms at the positive anode and reacts with the carbon of the graphite to form carbon dioxide CO2. Was this helpful? Yes | No| I need help To visualize the process of electrolysis please refer to the diagram above. Referencing this Article If you need to reference this article in your work, you can copy-paste the following depending on your required format: APA (American Psychological Association) Extraction of Aluminium by Electrolysis. (2019). In ScienceAid. Retrieved Jan 4, 2023, from https://scienceaid.net/chemistry/applied/aluminium.html MLA (Modern Language Association) "Extraction of Aluminium by Electrolysis." ScienceAid, scienceaid.net/chemistry/applied/aluminium.html Accessed 4 Jan 2023. Chicago / Turabian ScienceAid.net. "Extraction of Aluminium by Electrolysis." Accessed Jan 4, 2023. https://scienceaid.net/chemistry/applied/aluminium.html. If you have problems with any of the steps in this article, please ask a question for more help, or post in the comments section below. Comments Anonymous user #1 165 days ago Score 0 Well explained thanks a lot Permalink | Reply Anonymous user #2 640 days ago Score 0 Why Aluminum form melted during electrolysis Permalink | Reply Anonymous user #3 741 days ago Score 0 what are the advantages of extracting aluminum from bauxite Permalink | Reply Anonymous user #4 651 days ago Score 0 Bauxite ore is the world's primary source of aluminium. It also contains around 30-60% aluminium making it one of the most economic choices. Permalink Anonymous user #5 1003 days ago Score 0 Why can we not directly evaporate water from Bauxite to form Alumina? Permalink | Reply Anonymous user #6 1070 days ago Score 0 Why is pure aluminum attracted to the cathode Permalink | Reply Anonymous user #7 1022 days ago Score 0 aluminium ionizes into positive 3+ ion, so it is attracted to the negative electrode which is the cathode Permalink Anonymous user #8 1086 days ago Score 0 what is the reason for using carbon powder on the top of the elecrolyte during elecrolysis of alumina Permalink | Reply Anonymous user #9 1150 days ago Score 0 ))))) Permalink | Reply Anonymous user #10 1209 days ago Score 0 what is the ores of aluminium Permalink | Reply Anonymous user #11 1189 days ago Score 0 bauxite Permalink Anonymous user #12 1242 days ago Score 0 What other medals are extracted by electrolysis Permalink | Reply Anonymous user #13 1104 days ago Score 0 Any which is more reactive than carbon Permalink Anonymous user #14 1253 days ago Score 0 state the extraction of iron Permalink | Reply Anonymous user #15 1283 days ago Score 0 Conclusion on extraction of aluminum Permalink | Reply Anonymous user #16 1334 days ago Score 0 What is the electrode that must be replaced Permalink | Reply Anonymous user #17 1169 days ago Score 0 The carbon anode. Carbon is used due to it's high temperature resistance, but other anodes could be used like platinum, that don't get used up. Permalink Anonymous user #18 1336 days ago Score 0 I love sciene!!! Permalink | Reply Anonymous user #19 1349 days ago Score 0 which are the gases formed during this processs Permalink | Reply Anonymous user #4 651 days ago Score 0 Carbon dioxide and carbon monoxide are both waste products of this reaction as the oxygen separated from the aluminium oxide reacts with the carbon from the graphite anodes. Permalink Anonymous user #20 1169 days ago Score 0 Which process Permalink Anonymous user #21 1201 days ago Score 0 I need answer from this question .Explain with labeled diagram the process of extraction of aluminium from its one Permalink Anonymous user #22 1367 days ago Score 0 What are some of the places were aluminum is found? Permalink | Reply Anonymous user #23 1049 days ago Score 0 Jamaica and Guinea Permalink Anonymous user #24 1398 days ago Score 0 What is a sciene? Permalink | Reply Anonymous user #25 1440 days ago Score 0 Gandu ko khuch ata nahi par hepalte bahot sare lavade Permalink | Reply Anonymous user #26 1480 days ago Score 0 Given 0.10mol per dm cube solutions of HCl and CH3COOH state and explain which of the acid solutions will have the higher electrical conductivity. Permalink | Reply Anonymous user #27 1506 days ago Score 0 baap ko mat sikha Permalink | Reply Anonymous user #28 1499 days ago Score 0 Legend Permalink Anonymous user #29 1513 days ago Score 0 Why must it be extracted using electrolysis Permalink | Reply Anonymous user #4 651 days ago Score 0 Because aluminium is more reactive than carbon therefore cannot be extracted via carbon reduction. Permalink Anonymous user #30 1741 days ago Score 0 precautionary measures taken during electrolysis of aluminium from alumina Permalink | Reply Anonymous user #31 1626 days ago Score 0 highly reactive therefore it should be well evacuated from for safety Permalink Anonymous user #32 1747 days ago Score 0 Is it necessary for carbon dioxide to form?Why?? Permalink | Reply Anonymous user #33 1444 days ago Score 0 Yes because the oxygen evolved reacts with the graphite anode that's why carbon dioxide is formed Permalink Anonymous user #34 1809 days ago Score 0 Because bauxite is aluminium's ore and it needs to be seperated Permalink | Reply Anonymous user #35 1850 days ago Score 0 Why is the extraction of aluminium from bauxite used? Permalink | Reply Anonymous user #36 105 days ago Score 0 Sodium Permalink ScienceAid welcomes all comments. If you do not want to be anonymous, register or log in. It is free. 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