The electrochemical equivalent of a metal is “x”g. coulomb^–1. The equivalent weight of metal is 

The electrochemical equivalent(Z) of an element is defined as the mass of an element deposited at an electrode when one coloumb of electricity is flows through an electrolytic cell.

$w = Z\hspace{0.17em} Q$

$\mathrm{Z}=\frac{\mathrm{E}}{\mathrm{F}}$

E= equivalent weight 

F = 96500 coloumbs

$$\begin{gathered} \mathrm{E}=\mathbf{x} \mathrm{g}. {\mathrm{coloumb}}^{-1}\mathrm{X}\hspace{0.17em}\hspace{0.17em}96500 \mathrm{coloumb} \\ \mathrm{E}=\mathbf{ }\mathbf{x}\hspace{0.17em}\times 96500 \mathrm{g}. \end{gathered}$$