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(B) The electrochemical equivalent $(Z)$ of a substance is defined as the mass of the substance liberated or deposited during electrolysis by the pass

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$Kg C^{-1}$

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(B) The electrochemical equivalent $(Z)$ of a substance is defined as the mass of the substance liberated or deposited during electrolysis by the passage of $1 \ C$ of charge.According to Faraday's laws of electrolysis,the mass $(m)$ deposited is given by $m = Z 	imes Q$,where $Q$ is the charge in Coulombs $(C)$.Rearranging for $Z$,we get $Z = \frac{m}{Q}$.Since the mass $(m)$ is measured in kilograms $(Kg)$ in the $SI$ system and charge $(Q)$ is measured in Coulombs $(C)$,the $SI$ unit of electrochemical equivalent is $Kg C^{-1}$.

The $SI$ unit of electrochemical equivalent is

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