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Homework Statement
Calculate the potential of a Zn^2+/Zn and Ag^1+/Ag couple.
Homework Equations
Zn^2+ + 2e^1– ⇌ Zn E= –0.76 V
Ag^1+ + e^1– ⇌ Ag E= +0.80 V
The Attempt at a Solution
First I know to multiply the silver half reaction by two so that each half reaction has two electrons. Then I flip the zinc reaction and switch the sign of its energy. Then, I added the two energies to get a cell potential of 1.56V. However, my homework is telling me that this is incorrect. I can not think of any reason why that is so. Any suggestions? Any help would be much appreciated.