Electrochemical equivalent

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The Electrochemical equivalent, sometimes abbreviated Eq or Z, of a chemical element is the mass of that element (in grams) transported by 1 coulomb of electric charge. The electrochemical equivalent of an element is measured with a voltameter.

Definition[]

The electrochemical equivalent of a substance is the mass of the substance deposited to one of the electrodes when a current of 1 ampere is passed for 1 second, i.e. a quantity of electricity of one coulomb is passed.

The formula for finding electrochemical equivalent is as follows:

${\displaystyle Z=M/q}$

where ${\displaystyle M}$ is the mass of substance and ${\displaystyle q}$ is the charge passed. Since ${\displaystyle q=It}$, where ${\displaystyle I}$ is the current applied and ${\displaystyle t}$ is time, we also have

${\displaystyle Z=M/It}$

Eq values of some elements in kg/C[]

References[]

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