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A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge. 2Fe^3+(aq) + Cu(s) 2Fe^2+(aq) + Cu^2+(aq) The anode reaction is: The cathode reaction is: In the external circuit, electrons migrate______ the Fe2+|Fe3+ electrode______ the Cu|Cu2+ electrode. In the salt bridge, anions migrate ____ the Cu|Cu^2+ compartment ______ the Fe^2+|Fe^3+ compartment.