3. In the lead storage battery, lead serves as the anode, and lead coated with lead oxide serves as the cathode. Both electrodes dip into an electrolyte solution of sulfuric acid. The electrode reactions are Pb(s) + HSO4 (aq) → PbSO4(s) + H+ (aq) + 2e¯ PbO₂ (s) + HSO4 (aq) + 3H+ (aq) + 2e → PbSO4(s) + 2H₂O(l) E ox = +0.35V Eºred = +1.69V Cell reaction: Pb(s) + PbO₂ (s) + 2HSO (aq) + 2H+ (aq) → 2PbSO4(s) + 2H₂0 (1) (The given standard reduction/oxidation potentials were measured at 25°C). a. b. Calculate the standard cell potential, Eº, for this cell at 25°C. The concentration of sulfuric acid in a car battery is 6 M, when the battery is fully charged. Use the Nernst equation to determine the cell potential, E. Remember that sulfuric acid is a strong acid (use only the first proton).

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Chapter19: Electrochemistry
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Problem 19.118QP
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3. In the lead storage battery, lead serves as the anode, and lead coated with lead oxide
serves as the cathode. Both electrodes dip into an electrolyte solution of sulfuric
acid. The electrode reactions are
Pb(s) + HSO4 (aq) → PbSO4(s) + H+ (aq) + 2e¯
PbO₂ (s) + HSO4 (aq) + 3H+ (aq) + 2e → → PbSO4(s) + 2H₂O(l)
E ox = +0.35V
Eºred = +1.69V
Cell reaction: Pb(s) + PbO₂ (s) + 2HSO (aq) + 2H+ (aq) → 2PbSO4(s) + 2H₂O(l)
(The given standard reduction/oxidation potentials were measured at 25°C).
a.
b.
Calculate the standard cell potential, Eº, for this cell at 25°C.
The concentration of sulfuric acid in a car battery is 6 M, when the
battery is fully charged. Use the Nernst equation to determine the cell
potential, E. Remember that sulfuric acid is a strong acid (use only the first
proton).
Transcribed Image Text:3. In the lead storage battery, lead serves as the anode, and lead coated with lead oxide serves as the cathode. Both electrodes dip into an electrolyte solution of sulfuric acid. The electrode reactions are Pb(s) + HSO4 (aq) → PbSO4(s) + H+ (aq) + 2e¯ PbO₂ (s) + HSO4 (aq) + 3H+ (aq) + 2e → → PbSO4(s) + 2H₂O(l) E ox = +0.35V Eºred = +1.69V Cell reaction: Pb(s) + PbO₂ (s) + 2HSO (aq) + 2H+ (aq) → 2PbSO4(s) + 2H₂O(l) (The given standard reduction/oxidation potentials were measured at 25°C). a. b. Calculate the standard cell potential, Eº, for this cell at 25°C. The concentration of sulfuric acid in a car battery is 6 M, when the battery is fully charged. Use the Nernst equation to determine the cell potential, E. Remember that sulfuric acid is a strong acid (use only the first proton).
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