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I'm confused on how to write half reactions and construct cell diagrams for redox reactions that have only one product. Can someone explain how to write the half-reactions for a redox reaction like 2Ag(s) + Br2(g) --> 2AgBr(s)?
You need two half reactions in order to write a cell diagram. The example you provided is a whole cell and it can be broken up into two half-cells. With the half reactions from this, you write the anode on the left side of the salt bridge and the cathode on the right side.
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