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Electrostatic induction in Solutions?

  1. Feb 24, 2012 #1
    I was wondering if induction can apply to different chemical solutions. Take HCl for example. If a negatively charged rod were placed against the beaker in which HCl was held, would the H+ ions be pulled towards the rod. Would the same outcome appear in a neutral solution of NaCl (drawing the Na+ towards the negatively charged rod). Could a positively charged rod induce NaOH, drawing the OH- ions towards it?
  2. jcsd
  3. Feb 25, 2012 #2


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    Staff: Mentor

    In general - no. There will be some very small increase in amount of ions on the phase boundary closest to the rod, measurable with a very precise electrochemistry techniques but nothing easy to observe using different methods..
  4. Feb 27, 2012 #3
    Awesome, thanks.
  5. Feb 29, 2012 #4
    So called double layer forms at the interface, effectively screening the field of the charged body so ions further in the solution will feel virtually no net force.

    http://en.wikipedia.org/wiki/Double_layer_(interfacial [Broken])
    Last edited by a moderator: May 5, 2017
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