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Two electrolytic cells containing silver...

Two electrolytic cells containing silver nitrate solution and copper sulphate solution are connected in series. A steady current of 2.5 amp was passed through them till 1.078 g of Ag were deposited. How long did the current flow ? What weight of copper will be deposited ? `(Ag = 107.8 u, Cu = 63.5 u)`

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`w=zxxixxt`
`t=(w)/(zxxi)`
`t=(1.078xx1xx96500)/(107.8xx2.5)="386 seconds"`
`Cu^(2+)+2e^(-)rarrCu`
`w=(63.5)/(2xx96500)xx2.5xx386="0.3175 gram"`
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