An alloy weighing of Pb — Ag was dissolved in desired amount of and the volume was made

CHEMISTRY · Subjective · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

An alloy weighing

1.05\text{ g}

of Pb — Ag was dissolved in desired amount of

\text{HNO}_3

and the volume was made

350\text{ mL}

. An Ag electrode was dipped in solution and

E_{\text{cell}}

of the cell

\text{Pt} | \text{H}_2 \underset{1\text{ atm}}{1\text{ M}} | \text{H}^+ || \text{Ag}^+ | \text{Ag}

was

0.503\text{ V}

298\text{ K}

. Calculate the percentage of lead in alloy. Given

E^\circ_{\text{Ag}^+/\text{Ag}} = 0.80\text{V}