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 $$=$$−$$306kJ/mol$$

Question

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 $$=$$−$$306kJ/mol$$

Infinity Learn · Accepted Answer

Anode : $$Pbs+SO42$$−aq→  $$PbSO4s+2e$$−E° $$=$$ $$0.3VCathode$$: $$PbO2+SO42$$−$$aq+4H++2e$$−→  $$PbSO4+2H2Ol$$ E° $$=$$ $$1.7$$ $$VEcello=2V$$ΔGcetl ∘$$=$$−$$(2)(96500)(2)1000=$$−$$386$$ΔG∘$$=$$ΔH∘−TΔS∘TΔS∘$$=$$ΔH∘−ΔG∘TΔS∘$$=$$−$$306+386=80$$ΔS∘$$=+$$

Want to Fund your own JEE / NEET / Foundation preparation ??

Detailed Solution

Get Expert Academic Guidance – Connect with a Counselor Today!