One faraday of electericity is passed separately through one litre of one molar aqueous soltion of I) `AgNO_(3)`, ii) `SnCl_(4)` and iii) `CuSO_(4)`. The number of moles of Ag, Sn and Cu deposited at cathode are respectively

Options

A. `1.0,0.25,0.5`
B. `1.0,0.5,0.25`
C. `0.5,1.0,0.25`
D. `0.25,0.5,1.0`

Answer

A

Explanation

`Ag^(+):Sn^(+4):Cu^(+2)therefore(1)/(1):(1)/(4):(1)/(2)`