One coulomb of charge passes through sol...

One coulomb of charge passes through solutions of `AgNO_3 and CuSO_4`. The ratio of the amounts of silver and copper deposited on platinum electrodes used for electrolysis is

`108 : 63.5 `

`54 : 31.75`

`108 : 31.75 `

`215.8 : 31.75`

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