Here’s the problem:
A voltaic cell is formed with one beaker containing a silver wire in a solution of AgNO3 and the other containing a nickel strip in NiCl2. Write the half reactions that occur in each cell.
I’m a little lost as to how I would go about writing these. The answer says
Ag+ + e- > Ag
Ni > Ni2+ + 2e-
which I understand, however what determines silver as the species being reduced and nickel being oxidized? Why could they not be switched around?
Any help is greatly appreciated! Thanks