Question

Find the value of charge on metal cation if $10800\,C$ of electricity is passed through the electrolytic solution and that deposited $2.977\,g$ of metal (At mass $106.4$).

Answer 1

$\because \, \frac{W}{E}=\frac{Q}{96500}$
$\therefore E=\frac{W \times 96500}{Q}=\frac{2.977 \times 96500}{10800}=26.6$
$\therefore$ Valency $= \, \frac{106.4}{26.4}=4$