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A copper voltameter, a solver voltameter...

A copper voltameter, a solver voltameter and a water voltamenter are connected in series and current is passed for some time. The ratio of the number of moles of copper, silver and hydrogen formed at the cathode is

A

`2:1:1`

B

`1:1:1`

C

`1:2:1`

D

`1:2:2`

Text Solution

Verified by Experts

The correct Answer is:
C
Acc. Faraday.s second law,
`1F rArr Cu(1/2 "mole") rArr Ag(1"mole") rArr 1/2 (H_(2))`
`rArr 1/2 : 1 : 1/2 xx 2 = 1 : 2 : 1`
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