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Consider the following half cell reactio...

Consider the following half cell reaction:
`Br_2+2barerarr2Br^-`, `E^@=1.09V`
`I_2+2barerarr2I^-`, `E^@=0.54V`
If `I_2` and `Br_2` are added to solution containing 1M concentration of `I^-` and `Br^-` resepctively.
Write and equation for the overall cell reaction and `E^@` of the cell.

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