What current strength is required to deposit $36 \mathrm{~g}$ of $\mathrm{Ag}$ in 7 minute from…
What current strength is required to deposit $36 \mathrm{~g}$ of $\mathrm{Ag}$ in 7 minute from $\mathrm{AgNO}_3$ solution by electrolysis? (Atomic mass $\mathrm{Ag}=108)$
11.44 amp
5.72 amp
76.6 amp
38.3 amp
Solution
$\begin{aligned} & W=\frac{E}{F} I t \\ & 36=\frac{108}{96500} \times \mathrm{I} \times 7 \times 60 \\ & I=76.6 \mathrm{amp}\end{aligned}$