1.

An alloy of Pb-Ag weighing 1.08 g was dissolved in dilute HNO, and the volume made to 100 mL. A silver electrode was dipped in the solution and the emf of the cell set-up Pt(s), H_2(g) |H^(+)(1 M)||Ag^(+) (ag)|Ag(s) was 0.62 V. If E_("cell")^@ is 0.80 V, what is the percentage of Ag in the alloy? (At 25^@C, RT//F =0.06)

Answer»

25
2.5
10
1

Answer :D


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