A constant current (0.5 amp) is passed for 1 hour through (i) aqueous `AgNO_(3)` (ii) aqueous `CuSO_(4)` and (iii) molten `AlF_(3)` separately . The ratio of the mass of the metals deposited on the cathod is
`[M_(Ag), M_(Cu), M_(Al)` are molar masses of the respectively metals]

Options

A. `M_(Ag):2M_(Cu):3M_(Al)`
B. `M_(Ag):M_(Cu):M_(Al)`
C. `6M_(Ag):3M_(Cu):2M_(Al)`
D. `3M_(Ag):2M_(Cu):2M_(Al)`

Answer

C

Explanation

`{:(,Ag^(+),,:,Cu^(2+),:,Al^(3+)),("no . of eq. deposit",x,:,x,:,x),("no. of mol deposit",(x)/(1),:,(x)/(2),:,(x)/(3)),(,6x,:,3x,:,2x),("no. of mole desposit",6,:,3,:,2),("mass deposit",6M_(Ag),:,3M_(Cu),:,2M_(Al)):}`