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Water and electrolyt

  1. Nov 25, 2009 #1
    I have no idea why water is good conductor.Water has not a lot of freee electrons.Yes water has ions,but theoretically,if I catch a wire under current and I stay in water what is going on with ions?They cannot go through body.Only electrons.So how is it possible?
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  2. jcsd
  3. Nov 25, 2009 #2

    Borek

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    Staff: Mentor

    Water is not a good conductor, quite the opposite. Ultrapure water has a specific resistance of 18 MΩcm

    Then, water gest very easily contaminated and it is presence of ions from contamination that makes it conductive.

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  4. Nov 25, 2009 #3
    Yes,I know that ions makes water good conductor,but I don t understand the process of this.I metals are free electrons,but water not.And ions cannot be oxidise or reduce,because there aren t any electrodes like for example in the battery.So my question is,what exactly conducts electric current.Some graph or something will be welcome.THanks again
     
  5. Nov 25, 2009 #4

    Borek

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    Staff: Mentor

    Moving ions transfer charge in bulk of the solution, reduction/oxidation on electrodes transfers charge through the phase border.

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