87.8 Electrode potential 7.8.5. liquid junction potential and salt bridge (3)Effects of salt bridge salt bridge Fe electrode Cu electrode Every measurement of emf of a cell whose two electrodes require different electrolyte raises the problem of the liquid junction potential Fe(NO3)2 Cu(NO3)2 solution solution The problem can be solved either by measur ng the junction potential or eliminating it. The salt bridge is often used to connect the two electrode compartments to reduce the junction potential(3) Effects of salt bridge Every measurement of emf of a cell whose two electrodes require different electrolyte raises the problem of the liquid junction potential. The problem can be solved either by measuring the junction potential or eliminating it. The salt bridge is often used to connect the two electrode compartments to reduce the junction potential. 7.8.5. liquid junction potential and salt bridge §7.8 Electrode potential