Liquid junction potential

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  • #1
somasimple
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Summary:

Liquid junction potential question

Main Question or Discussion Point

Hi,
Is there a liquid/liquid junction potential between two liquids of same composition but different concentrations WHEN there is no external electrical circuit and then NO electrodes? (Of course this potential is not measurable).

Thanks,
 

Answers and Replies

  • #3
somasimple
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Well, the links you gave show electrodes then there is a RedOx reaction with charge transfer within the external circuit. That is not my question.
 
  • #4
Tom.G
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Summary:: Liquid junction potential question

Of course this potential is not measurable
If something is not detectable, then how would anyone know?
 
  • #6
atyy
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Yes, from the mechanism it exists even without being measured.
 
  • #7
somasimple
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Thanks for this reply.
 
  • #9
somasimple
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Thanks again Atyy,
The same phenomenon applies to batteries. They have an internal EMF even if they are not connected but one can not know their inner potential without connecting them. The charge separation creates an Electric field also called an electroneutrality field. It is the force that lets the things in place.
 

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