Studies on the Kinetically Equilibrium Potentials of Mercury and Platinum Electrodes in Homogeneous Cells

Author: Tzu Fang Lin

Abstract：

Several homogeneous cells with mercury and platinum electrode were inves igated. By using stress-free liquid mercury electrode, it was thought that the equilibrium could be reached in a shorter time and finally the residual potentials of the cells were zero. Although it took shorter equilibration time, the residual potentials were not zero. In this report the different magnititude of observed electrode potential are explained. A new concept of kinetically equilibrium potential (K. E. P.) which differs from the concept of thermody-namically equilibrium potential (T. E. P.) is also introduced. An inevitable conclusion that most of homogeneous cells have non-zero residual potentials can be drawn from different structures of electric double layer for different electrodes even in the equilibrium state.

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