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A current of 1 amp was passed for t seco...

A current of 1 amp was passed for t seconds through cells P,Q andR connected in series. These contain respectively silver nitrate, mecruric nitrate and mercurous nitrate. AT the cathode of the cell P,0.21 6 g of Ag was deposited. The weights of mercury deposited in the cathode of Q and R respectively are.

A

0.4012 and 0.8024g

B

0-4012abd 0.2006g

C

0-2006 and 0.4012g

D

0.1003 and 0.2006 g .

Text Solution

Verified by Experts

The correct Answer is:
C
In Q cell : g eq. of `H_(2+)=` g eq. Of `Ag^(+)`
`(W)/(200.6//@)=(0.216)/(108)therefore W=0.2006g`
In R cell: g eq. of `Hg^ (+)=` g eq. of `Ag^(+)`
`(W)/(200.6//2)=(0.216)/(108)=therefore W=0.4012`
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