6L.7 part a 7th edition

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Katie Frei 1L
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6L.7 part a 7th edition

Postby Katie Frei 1L » Thu Mar 07, 2019 9:17 pm

For problem 6L.7 part (a) in the 7th edition of the textbook, you are asked to devise a galvanic cell for AgBr(s) becoming Ag+(aq) and Br-(aq) using the half-reactions. In the solutions manual, the half reactions that are used for the problem are Ag+(aq) becoming Ag(s) and also AgBr(s) decomposing down into Ag+(aq) and Br-(aq). I was wondering if anyone knew why the book selects the half reaction involving silver rather than the half reaction involving bromine. Thank you!

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Re: 6L.7 part a 7th edition

Postby Chem_Mod » Fri Mar 08, 2019 1:55 am

If you look at the half reaction with AgBr, the Ag there should be in a solid state, not an aqueous. Thus, we need the Ag+ half reaction.

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