silver chloride electrode

Silver chloride electrodes are fitted into the fluid cell.

The silver chloride electrode is a common reference electrode in electrochemistry.

It can be measured using two small silver chloride electrodes placed somewhere on the skin, and applying small voltage between them.

A silver chloride electrode is a type of reference electrode, commonly used in electrochemical measurements.

The reference electrode may be a silver chloride electrode or a calomel electrode.

As another example, the silver chloride electrode is the most commonly used reference electrode for testing cathodic protection corrosion control systems in sea water environments.

For practical pH measurement, a second pH independent reference electrode (such as a silver chloride electrode) is also used.

Bard et al. give the following correlations for the standard potential of the silver chloride electrode as a function of temperature (where t is temperature in C):

Silver-containing single-junction pH electrodes (e.g., silver chloride electrode) are incompatible with Tris (Ag-tris precipitation clogs the junction).

Farmer gives the following correlation for the potential of the silver chloride electrode with 0.1 mol/kg KCl solution, accounting for the activity of Cl at the elevated temperature:

Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode.

The more complex references such as standard hydrogen electrode, saturated calomel electrode, or silver chloride electrode(specific concentration) can not directly mix the analyte solution for fear the electrode will fall apart or interact/react with the analyte.

When appropriately constructed, the silver chloride electrode can be used up to 300 C. The standard potential (i.e., the potential when the chloride activity is 1 mol/kg) of the silver chloride electrode is a function of temperature as follows: