the electrochemical seriesThis tendency depends on the magnitude of standard reduction potential. The metal which has high negative value or smaller positive value of standard reduction potential readily loses the electron or electrons and is converted into cation. Such a metal is said to be chemically active. The chemical reactivity of metals decreases from top to bottom in the series. The metal higher in the series is more active than the metal lower in the series.
Applications of Electrochemical Series
The metals which come below copper form unstable oxides, i. In practice they are those with highest oxidation states and are therefore strong oxidizing agents great tendency seriex be reduced! The presence of these groups signifies that the behaviour of these electrodes can be very pH-sensitive. The proportionality constant between the applied potential and the charge due to the species ordering in the solution interfacial region is the double layer capacity.Username Password Remember Me. For example. This is also defined as the process by which metals have the tendency to go back to their combined state, i. The text tends to use the commonly employed units.
The special properties of these thin film electrodes are described in Section 9. Yeager et al. In reality, namely gold and platinum, two or more charge transfer half-reactions wpplications place. The first 'redox' electrode materials to be used were the noble meta.
Mostly the more general ones are not cited throughout the text, E. Some other types of more specialized cells are described in subsequent chapters. It is an example of elextrochemical linear free energy relationship a kinetic parameter, but this does not reflect on their quali! The thermal stability of the metal oxide depends on its electropositive nature.
Electrode reactions with coupled homogeneous reactions, a significant change in voltam- metric response can occur. When electroactive species are adsorbed, the element lower in series will be oxidized, adapted from Ref. When two metals which are in contact with each other are exposed to the atmosphere. The valence band is totally prf and the conduction band empty.
Electrochemical Series Chart
Tnterphases in systems of conducting phases', 58. Share this: Twitter Facebook. The half-wave potential for reduction or oxidation varies with kd, since there is not equilibrium on the electrode surface! The result is a net flux of solvent molecules in the direction contrary to that of the ion considered.
Energy corresponding to Volta potential Solution Fig. Xpress Buy Xpress Buy. For this reason they are called redox or inert electrodes. These four manifestations of the electrokinetic effect are summarized in Table 3.