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 E0cell.
c) Calculate the value of deltaG0rxn
d) Calculate the value of Ecell at 25C is [H2SO4] = 10.0M
e) How many lead-acid cells are in a 12 V car battery? Round to the nearest integer.
3 answers
And exactly what is your problem. Do you have the potentials.
(a)Using the half reactions, you can sum them to determine the balanced equation.
(b)To find the E(0) cell, use the standard potentials with the correct signs and sum them
(c)To find the changeG^0 rxn, use the formula -nFE^0 and the E^0 calculated in (b)
(b)To find the E(0) cell, use the standard potentials with the correct signs and sum them
(c)To find the changeG^0 rxn, use the formula -nFE^0 and the E^0 calculated in (b)
A) Pb(s)+PbO2(s)+2SO4^2-(aq)+4H^4->2PbSO4(s)+2H2O(l)
B)2.04
C) -393.66
D)2.07
E)6
B)2.04
C) -393.66
D)2.07
E)6
1 answer