(a) Electrochemical Equivalent:
It is defined as the weight of substance deposited or liberated when one-coulomb electric change is passed through an electrolyte. It is denoted by Z, Unit is Kg/Coulomb
A current of 96500 coulombs is called one Faraday charge. It is denoted by F.
It is defined as the negative logarithm of the hydrogen ion (H+) concentration (in mole per litre)
pH= – log [H1]
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