In the reaction

$2{\mathrm{CuSO}}_4+4\mathrm{KI}\stackrel{ }{\to }2{\mathrm{Cu}}_2{\mathrm{I}}_2+{\mathrm{I}}_2+2{\mathrm{K}}_2{\mathrm{SO}}_4\mathrm{the}\mathrm{equivalent}\mathrm{weight}\mathrm{of}{\mathrm{CuSO}}_4\mathrm{will}\mathrm{be}$

$\begin{array}{l}2{\mathrm{CuSO}}_4+4\mathrm{KI}\stackrel{ }{\to }{\mathrm{Cu}}_2{\mathrm{I}}_2+{\mathrm{I}}_2+2{\mathrm{K}}_2{\mathrm{SO}}_4.\\ {\mathrm{Cu}}^{2+}+\text{\hspace{0.17em}\hspace{0.17em}1}{\mathrm{e}}^{-}\stackrel{ }{\to }{\mathrm{Cu}}^{+}.\\ {\mathrm{E}}_{\mathrm{Cu}}=?\mathrm{V}.\mathrm{F}.=1.\\ {\mathrm{E}}_{{\mathrm{CuSO}}_4}=\frac{159.5}{1}=159.5\end{array}$