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An alloy Pb-Ag weighing 1.08g was dissol...

An alloy Pb-Ag weighing 1.08g was dissolved in dilute `HNO_3` and the volumne made to 100 mL. A silver electrode was dipped in the solution and the e.m.f of the cell set up
`Pt(s),H_2(g)|H^+(1M)||Ag^+(aq)|Ag(s)` was 0.62V. If `E_(cell)^@=0.80V`, what is the percentage of Ag in an alloy?

A

25

B

2.5

C

10

D

1

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