Question:
Write the cell reaction of a lead storage battery when it is discharged. How does the density of the electrolyte change when the battery is discharged?
Solution:
Pb(s)+PbO2(s)+2H2SO4(aq)→ 2PbSO4(s) + 2H2O(l)
Density decreases as the product water form dilute the H2SO4 concentration during the discharge of the battery.
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