Avoltaic cell is constructed in which the anode is a zn|zn2+ half cell and the cathode is a fe2+|fe3+ half cell. the half-cell compartments are connected by a salt bridge.(use the lowest possible coefficients. use the pull-down boxes to specify states such as (aq) or (s). if a box is not needed, leave it blank.)the anode reaction is: + yeilds + cathode reaction is: + + net cell reaction is: + + the external circuit, electrons migrate fe2+|fe3+ electrode zn|zn2+ electrode. in the salt bridge, anions migrate the fe2+|fe3+ compartment the zn|zn2+ compartment.