For reversible operation of the lead storage cell (given in following figure) at 298 K and all species in the cell in their standard state, Select the correct statement(s) based on following data.Half cell reaction E°(volt) PbO2(s)+SO4−2(aq)+4H+(aq)2e−→PbSO4(s)+2H2O(ℓ)+1.7VPbO2(s)+4H++2e−→Pb+2(aq)+2H2O(ℓ) +1.46VPb+2(aq)+2e−→Pb(s) −0.13VPbSO4(s)+2e−→Pb(s)+SO4−2(aq)ΔH∘ of the overall cell reaction =−306kJ/mol
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a
Maximum electrical work that can be extracted from the cell during discharge is 386 kJ/ mol approximately for the cell reaction
b
Concentration of H2SO4 decreases during cell discharge
c
During discharging ∆S for cell reaction is negative
d
Thickness of cathode & anode increases during cell discharge