A voltaic cell that uses the reaction

Tl3+(aq) + 2 Cr2+(s) �¨ Tl+(aq) + 2 Cr3+(aq)
has a measured standard cell potential of +1.19 V.

determine E�‹red for the reduction of Tl3+(aq) to Tl+(aq).

3 answers

You need concentrations or Eox for Cr.
then do you subtract the given cell potential from that?
.78
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