What is Electrochemical Equivalent?

Electrochemical equivalent refers to the amount of a substance that is deposited or liberated at an electrode per unit of electrical charge that flows through the electrolyte during an electrochemical reaction. It is a physical constant that relates the amount of a substance produced or consumed during an electrochemical reaction to the amount of electrical charge that is passed through the system.

The electrochemical equivalent of a substance can be calculated using Faraday's laws of electrolysis, which state that the mass of a substance produced or consumed during an electrochemical reaction is directly proportional to the quantity of electricity (in Coulombs) that flows through the system. The electrochemical equivalent is defined as the mass of the substance that is produced or consumed per Coulomb of electrical charge.

The electrochemical equivalent can be expressed in different units depending on the system of measurement used. In the International System of Units (SI), the electrochemical equivalent is expressed in kilograms per Coulomb (kg/C). In the centimeter-gram-second (CGS) system, the electrochemical equivalent is expressed in grams per Coulomb (g/C).

The electrochemical equivalent is an important parameter in electrochemistry, as it allows scientists and engineers to predict the amount of a substance that will be produced or consumed during an electrochemical reaction based on the amount of electrical charge that is passed through the system. It is also used in the calculation of other electrochemical parameters, such as the standard electrode potential and the rate of electrode reactions.