A voltaic cell made of a Cr electrode in a solution of 1.0M in Cr3+ and a gold electrode in a solution that is 1.0M in Au3+. Provide the half cell reactions for each of the electrodes.

Question

anonymous · Answer

What im confused about this is that both of the electrodes are 3+ so I'm not sure which is the anode and which is the cathode.

jfraser · Answer

if you have a table of reduction potentials, the $larger$ potential will be the one that acts as the reduction, and so will occur at the cathode