108 g solution of $AgN{O}_3$is electrolysed using Pt electrodes by passing a charge of 0.1 F. The weight of resultant solution left is 

 $A{g}^{+}+e^{-}\to Ag$
$2O{H}^{-}\to H_{2}O+\frac{1}{2}{O}_2+2e^{-}$
 Eq. of  $A{g}^{+}$ lost = 0.1 = Eq. of O2 formed and escape
 Total wt. loss =  $0.1\times 108+\frac{0.1\times 32}{4}=11.6$
Wt. of solution = 108 – 11.6 = 96.47