A lead storage cell is discharged which causes the electrolyte to change from a…
CHEMISTRY · Subjective · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
A lead storage cell is discharged which causes the H2SO4 electrolyte to change from a concentration of 34.6% by mass (density 1.261 g mL−1 at 25∘C) to one of 27% by mass. The original volume of electrolyte is one litre. How many Faraday have left the anode of battery? Note the water is produced by the cell reaction as H2SO4 is used up. Overall reaction is:
Pb(s)+PbO2+2H2SO4(l)→2PbSO4(s)+2H2O