Conductivity two-electrode

The basic principle for preparing a metal is to reduce one of its salts by an electric current. Usually a second or third salt is added to the rare earth salt to lower the melting point, and to improve the liquidity and electrical conductivity. Two electrodes (a cathode and anode) are put into the molten salt and a current is passed through the bath to reduce the rare earth material. The rare earth metal (usually molten) is collected at the cathode and the anion is oxidized at the anode. The... 

For experiments with dropping mercury electrodes and microelectrodes in solutions of sufficient conductivity two-electrode cells may be used. In such a cell the working electrode is directly linked with the reference electrode of almost constant and known potential. One of three types is mostly chosen the calomel electrode (usually the saturated calomel electrode, SCE), the silver/silver chloride electrode (SSE) and the mercurosulphate electrode (MSE). The reference potentials of these electrodes may be found in Appendix C. During the passage of the current I the voltage drop in the solution... 

In conductivity detection, the concentration of an analyte is determined by measurement of the liquid conductivity. Two electrodes are placed in the channels. An alternating voltage, Vin, is applied between the electrodes and the resulting current, ij, is measured. The value of the current is proportional to the liquid conductivity, k (Sm )... 

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