# Can pure molten hydrochloric acid conduct electricity?

1. Feb 7, 2005

### no idea

can pure molten hydrochloric acid conduct electricity?

2. Feb 7, 2005

### bomba923

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

3. Feb 8, 2005

### chem_tr

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.

4. Feb 8, 2005

### bomba923

Would not the HCl gas conduct electricity as well? It has ions more mobile than that of its liquid form

5. Feb 8, 2005

### Pyrovus

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).

6. Feb 24, 2005

### bomba923

Silly mE! :surprised I forgot it was covalent... !!!
Ay!

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
7. Feb 24, 2005

### Staff: Mentor

What Pyrovus means is that in the reaction $$2HCl \leftrightarrow H_2Cl^+ + Cl^-$$ 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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