Gas electrodes an example of a gas electrode is the.

Example of gas electrode. All Gas sensors will consist of a sensing element which comprises of the following parts. Normal hydrogen electrode. School University of Wisconsin La Crosse.

Chlorine gas electrode is represented. An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit eg. An example of this would be platinum in the SHE reactiondescribed later.

The ability of the WE to provide selectivity to a gas is a result of the different catalytic activities of various electrode materials. These electrodes are represented as The overall electrode reaction is and the electrode potential is given by. Gas electrode definition is - an electrode consisting of a conductor covered with a gas.

2 2H 2e-At the CE the reaction is. Figure 2 oxidation occurs at its WE. Examples of such electrodes are mercury-mercurous sulphate in contact with a solution of potassium sulphate or a silver wire coated with silver chloride immersed in potassium chloride solution.

In general an electrochemical reaction will occur only beyond the characteristic equilibrium potential of the. O consumption of oxygen Figure 2. They are used generally to estimate the concentration of gas by its interaction in a thin layer surrounding an ion sensitive electrode commonly a pH electrode.

GDEs are porous electrodes that posses a large three-phase boundary surface. SHE is represented as Pt H 2g 1 atm H aq 1 M The half cell reactions are. An electrode has to be a good electrical conductor so it is usually a metal.