The reduction potential of being reduced to Pt is +1.20V. The reduction potential of
being reduced to Co is -.28V. This information is used to construct a galvanic cell.
What is the half reaction occurring at the anode?
A.
B.
C.
D.
D
The reaction with higher reduction potential occurs at the cathode. In this case, platinum is reduced. Cobalt is then oxidized at the anode. This reaction is represented by choice D.