Question

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).

Answer 1

You need concentrations or Eox for Cr.

Answer 2

then do you subtract the given cell potential from that?

Answer 3

.78