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Author Topic: need help with electrochemistry and liquid junctions  (Read 836 times)

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mrmiyagi

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need help with electrochemistry and liquid junctions
« on: April 24, 2012, 04:15:04 PM »

the question pertains to this:
Pt(s)/H2(g)/HBr(aq)/AgBr(s)/Ag(s)

It asks why a liquid junction is not necessary. So I know AgBr is insoluble in water, and AgBr coats the silver metal. I just don't understand why it does not matter that the Br- anions from AgBr mixing with the H+ cations doesn't necessitate a liquid junction. Any help?
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