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Half Reactions for Galvanic Cells

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A galvanic cell is constructed using two hypothetical half-reactions.

A + e- --> B Where E = 1.50 V

C + 2e- --> D Where E = -.50 V

a) Write the balanced equation representing the cell reaction.
b) Calculate the standard potential of this cell, Ecell.
c) Calculate delta G for the cell reaction.

Pretty much lost on this subject. The only thing I know is that the number or electrons gained on one side has to equal the number of electrons gained on the other side. In this situation it appears that both half reactions are losing electrons. So I am not sure how to even set this up.

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Solution Summary

The solution discusses half reactions for galvanic cells.