Question

A voltaic cell is composed of the following 2 half reactions:

Au3+(aq) + 3e− → Au(s) Ecell=1.4 V

Cu2+(aq) + 2e− → Cu(s) Ecell=0.342 V

Determine the non-standard state Ecell at 298 K when Au3+(aq) = 0.198 M and Cu2+(aq) = 0.653 M.