reduction electrode

Measurement of Electrode Potential - The absolute value of single electrode potential cannot be determined because the oxidation half reaction cannot take place without the reduction half. To overcome this difficulty the standard hydrogen electrode (SHE) is t..

The absolute value of single electrode potential cannot be determined because the oxidation half reaction cannot take place without the reduction half. To overcome this difficulty the standard hydrogen electrode (SHE) is taken as the standard or referenc..

Single Electrode Potential - It is not possible to measure the absolute potential of a single electrode because neither the oxidation nor the reduction reaction can occur by itself. Also, we need two electrodes to measure the potential difference between two ..

This means when the electrode potential is negative with respect to SHE, oxidation takes place at that electrode. When SHE acts as negative electrode, then Emf = E + v e - E - v e This means when the electrode potential is positive reduction takes p..

Origin of Electrode Potential - Consider a zinc rod being dipped in ZnSO 4 solution. The zinc atoms on the surface of the metal with in the solution have tendency to release Zn + 2 into solution retaining the electrons on the surface of the metal. This process is called dissolution or sol..

If an electrode undergoes spontaneous reduction when coupled with a standard hydrogen electrode (SHE) it is said to have a positive value of reduction potential and vice ver..

When one measures the standard electrode potentials, the temperature of the cell is 298 K and the concentration of the electrolyte solutions is fixed as 1 M. However, in actual practice, the electrochemical cells are not always at 298 K nor do always have this concentration of the electro..

The electrochemical cell consists of two half cells where one of the half-cell has a higher value of reduction potential as compared to the other. As a result of this potential difference, there is a flow of electrons from the electrode with a lower reduction pot..

Electrochemical Series - Different electrodes have different standard electrode potentials. The standard electrode potentials (E) for some electrodes are negative, while for some others E values are positive. The E values of many electrodes have bee..