Problem: The cell diagram for the lead-acid cell that is used in automobile and truck batteries isPb(s) l PbSO4 (s) l H2SO4 (aq) l PbO2(s), PbSO4(s) l Pb (s)where the comma between PbO2 (s) and PbSO4 (s) denotes a heterogeneous mixture of the two solids and the right-hand lead electrode is nonreactive.a, Write a balanced equation for the net cell reaction:b. Look up standard potentials for the oxidation and the reduction reactions, then calculate the value of E°cell.c. Calculate the value of ΔG°rxnd. Calculate the value of Ecell at 25°C is [H2SO4] = 10.0Me. How many lead-acid cells are in a 12 V car battery? Round to the nearest integer.

FREE Expert Solution

The cell diagram of the process is:

Pb(s) l PbSO4(s) l H2SO4(aq) l PbO2(s), PbSO4(s) l Pb(s) (nonreactive)

Where

The left-hand Pb(s) is one plate

PbSO4(s) is a solid in the left-hand plate

H2SO4(aq) is the electrolyte

PbO2(s), PbSO4(s) is a mixture of solids covering the right-hand plate

Pb(s) is the non-reactive right-hand plate


Because the right-hand cell is covered in a mixture (and hence, is non-reactive), we consider PbO2(s) as the right-hand plate.


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Problem Details

The cell diagram for the lead-acid cell that is used in automobile and truck batteries is

Pb(s) l PbSO4 (s) l H2SO4 (aq) l PbO2(s), PbSO4(s) l Pb (s)

where the comma between PbO2 (s) and PbSO4 (s) denotes a heterogeneous mixture of the two solids and the right-hand lead electrode is nonreactive.

a, Write a balanced equation for the net cell reaction:

b. Look up standard potentials for the oxidation and the reduction reactions, then calculate the value of E°cell.

c. Calculate the value of ΔG°rxn

d. Calculate the value of Ecell at 25°C is [H2SO4] = 10.0M

e. How many lead-acid cells are in a 12 V car battery? Round to the nearest integer.

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