In the electrochemical reaction between silver and copper, silver ions Ag+ get reduced to silver metal Ag while copper metal Cu is oxidized to copper ions Cu2+ . The half-reactions for this process are:Reduction half-reaction: Ag+ + 1e- AgOxidation half-reaction: Cu Cu2+ + 2e-In the reduction half-reaction, 1 electron is gained by the silver ion to form silver metal. In the oxidation half-reaction, 2 electrons are lost by the copper metal to form copper ions.To balance the overall reaction, we need to multiply the reduction half-reaction by 2 to have the same number of electrons in both half-reactions:2 Ag+ + 1e- Ag Now, the balanced overall reaction is:2Ag+ + Cu 2Ag + Cu2+In this balanced reaction, a total of 2 electrons are transferred between the silver and copper species.