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Homework Help: Electrolysis C/W contd. Variables help

  1. Sep 18, 2010 #1
    I have the marked draft of my coursework, its 36/40 but I need to improve 3 things. I need to expand on the Variables I have listed on my coursework, i have done half of them but im having trouble on the others. Heres the vaiables, the bold is what ive added. Any help is much appreciated, :smile:
    Thanks, Adam

    • Time – how long electrolysation happens for

    • Current – how many amps travel to the electrode

    • Temperature – effects particles kinetic energy

    • Solution – type of ion

    • Molarity of solution – mols/cm3 ; number of ions

    • Charge of Ions -

    • Quantity of solution -

    • Size of electrodes -

    • Distance between electrodes -

    • Surface area of electrodes -

    P.s Am i right in thinking the bottom three would be the same ; area exposed to electrolysation.
     
  2. jcsd
  3. Sep 19, 2010 #2
    Could anyone help?
     
  4. Sep 19, 2010 #3

    Borek

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    Staff: Mentor

    Distance between electrodes doesn't change their surface, but it changes the solution resistance.
     
  5. Sep 19, 2010 #4
    Thankyou, would Charge be : amount/strength of charge and what would quantity be :/
     
  6. Sep 19, 2010 #5

    Borek

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    Staff: Mentor

    Charge of ion is number of electrons that is has to gain (or lose) to become neutral.

    --
     
  7. Sep 19, 2010 #6
    • Time – how long electrolysation happens for

    • Current – how many amps travel to the electrode

    • Temperature – effects particles kinetic energy

    • Solution – type of ion

    • Molarity of solution – mols/cm3 ; number of ions

    • Charge of Ions - number of electrons needed to become neutral

    • Quantity of solution -

    • Size of electrodes - Area exposed to electrolysation

    • Distance between electrodes - resistance of solution

    • Surface area of electrodes - Area exposed to electrolysation


    Isnt charge like this though - 1.6 x 〖10〗^(-19) Charge for every unit, so Cu2+ has a charge and 3.2 x 〖10〗^(-19) C and Fe3+ has a charge of 4.8 x 〖10〗^(-19) C.
     
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