1.

The quantity electricity needed separately for the electrolysis of 1 M solution of `ZnSO_(4), AlCl_(3)` and `AgNO_(3)` completely is in the ratio of :A. `2:3:1`B. `2:1:1`C. `2:1:3`D. `2:2:1`

Answer» Correct Answer - A
(a) `Zn^(2+)+underset(2F)2e^(-) to underset(1mol)(Zn)`
`Al^(3+)+underset(3F)3e^(-) to underset(1mol)(Al)`
`Ag^(+)+underset(1F)e^(-) to underset(1 mol)(Ag)`
The number of Faradays needed are in the ratio :
`2F:3F:1F "or" 2:3:1`.


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