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Homework Help: Dry cell

  1. May 31, 2005 #1
    What happens if I use copper(II) sulphate as electrolyte with zinc electrode and copper electrode? Can this be an electrolysis set-up?
    SO2 produced?
  2. jcsd
  3. May 31, 2005 #2
    http://www.bbc.co.uk/schools/gcsebitesize/chemistry/usefulproductsrocks/electrolysisrev6.shtml [Broken]

    Electrolysis, aluminium and copper (Higher Tier)

    At the negative electrode
    Positive ions gain electrons at the negative electrode and are reduced.

    In aluminium extraction: Al3+ + 3e- image: arrow Al
    In copper purification: Cu2+ + 2e- image: arrow Cu

    At the posit
    ive electrode[/I]
    Why it must be a positive ion? Fluorine has a higher oxidizing power than them.
    Last edited by a moderator: May 2, 2017
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