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Can pure molten hydrochloric acid conduct electricity?

  1. Feb 7, 2005 #1
    can pure molten hydrochloric acid conduct electricity?
  2. jcsd
  3. Feb 7, 2005 #2
    Of course; HCl is an ionic solid; by definition, ionic solids are composed of anions and cations; when the solid is made liquid, you have free and mobile ions; thus, you can conduct electricity.

    Yes, pure molten HCl will conduct electricity
  4. Feb 8, 2005 #3


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    Well, I am not sure; hydrochloric acid is a gas which is used as aqueous solution. In high temperature you will not get it as a solid; it will evaporate. However, high temperature will possibly help its ionization.
  5. Feb 8, 2005 #4
    Would not the HCl gas conduct electricity as well? It has ions more mobile than that of its liquid form
  6. Feb 8, 2005 #5
    Liquid HCl will probably be a poor conductor of electricity owing to the fact that it is a covalent compound and doesn't have terribly many ions floating about. Pure water will conduct electricity as a result of ions created by the reaction 2H2O <-> H3O+ + OH-, and there is probably an analagous equilibrium taking place with the HCl: 2HCl <-> H2Cl+ + Cl-. However, HCl is such a weak base that it will have little tendency to accept a proton to form H2Cl+, so this reaction will probably have very little effect (also it should be noted that pure water is still a poor conductor of electricity, even with the aforementioned equilibrium taking place).
  7. Feb 24, 2005 #6
    Silly mE! :surprised :biggrin: I forgot it was covalent... :frown: !!!

    How? HCl is hydrochloric acid!, and it is a strong acid!! Strong acids will dissociate well in water!! Which means mobile ion availability in aqueous HCl solutions!--and thus will conduct electricity!
    Last edited: Feb 24, 2005
  8. Feb 24, 2005 #7


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    Staff: Mentor

    What Pyrovus means is that in the reaction [tex]2HCl \leftrightarrow H_2Cl^+ + Cl^-[/tex] HCl plays role of proton acceptor - so it is a Bronsted base.

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    Last edited: Feb 24, 2005
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