MERCURY-MERCURUS SULPHATE ELECTRODE

ELECTRODES

MERCURY- MERCURIC SULPHATE ELECTRODE

Electrode potential || EMF OF Cell || Standard Hydrogen Electrode || Measurement OF Standard Electrode Potential || Significance OF Standard Electrode Potential

Standard Electrode Potential||Half Cells||their reactions and representation||Complete Galvanic Cell with reactions and representations||Reference Electrodes||Standard Hydrogen Electrode||Secondary Electrodes Calomel Electrode and Silver Electrode

In a cell of NHE (Normal Standard Hydrogen Electrode) and calomel electrode, the reaction taking place at calomel electrode will be

The 0.1M copper sulphate solution in which copper electrode is dipped at 25^(@)C . Calculate the electrode potential of copper electrode. [Given : E^(0) Cu^(+2)//Cu = 0.34V]

Electrolysis is the process in which electrical energy is converted to chemical energy. In electrolytic cell, oxidation takes place at anode and reduction at cathode. Electrode process depends on the electrode taken for electrolysis. Amount of substance liberated at an electrode is directly propertional to the amount of charge passed through it. The mass of substance liberated at electrode is calculated using the following relation : m= ("ItE")/(96500) Here, E represents the equivalent mass and 96500 C is called the Faraday constant. Faraday (96500 C) is the charge of 1 mole electron, i.e., 6.023 xx 10^(23) electrons, it is used to liberate one gram equivalent of the substance. The platinum electrodes were immersed in a solution of cupric sulphate (CuSO_(4)) and electric current is passed through the solution. after sometime, it was observed that the colour of copper sulphate disappeared with evolution of a gas at the electrode. The colourless solution contains :

Calculate the electrode potential at a copper electrode dipped in a 0.1 M solution of copper sulphate at 25^(@)C . The standard electrode potential of Cu^(2+)//Cu system is 0.34 volt at 298 K.