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    Would anyone like to explain the electrolysis of unpure copper to me? One electrode has pure copper and the other had unpure copper. We had a supply teacher for the lesson and needless to say it was clear he didn't have a clue
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    (Original post by caitlinford3)
    Would anyone like to explain the electrolysis of unpure copper to me? One electrode has pure copper and the other had unpure copper. We had a supply teacher for the lesson and needless to say it was clear he didn't have a clue
    Is this AQA? Because I didn't think that was on C3
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    (Original post by caitlinford3)
    Would anyone like to explain the electrolysis of unpure copper to me? One electrode has pure copper and the other had unpure copper. We had a supply teacher for the lesson and needless to say it was clear he didn't have a clue
    I'm guessing you mean the purification of copper.

    So the positive electrode is made of impure copper and the negative electrode pure copper. The electrodes are in a solution of copper(II) sulfate
    So the copper atoms at the negative electrode are oxidised to form copper ions( lose electrons) The copper ions then go into the solution. The copper ions near the positive electrode then gain electrons and turn back into copper atoms. The impurities are dropped at the negative electrode whilst the pure copper atoms bond to the positive electrode.
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    TSR Support Team
    (Original post by ScienceFantatic)
    Is this AQA? Because I didn't think that was on C3
    I think it must be OCR because this came up in C3 for us
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    (Original post by ScienceFantatic)
    Is this AQA? Because I didn't think that was on C3
    (Original post by NiamhM1801)
    I think it must be OCR because this came up in C3 for us
    I'm on Edexcel C3 is the last chemistry triple science unit (I know for some exam boards they go up to like C6)

    Also, thank you so much ScienceFantatic for your help
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    my teachers slides they are the best
    Attached Files
  1. File Type: pptx copper purification.pptx (125.8 KB, 59 views)
 
 
 
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