6. The emf of the element Pb|PbSO4|Na2SO4*10H2O(saturated)|Hg2SO4|Hg is 0.9647 V at 25 C. Its temperature coefficient is 1.74*10-4 V/K. Calculate: a) change in enthalpy, b) change in isobaric potential for the reaction Pb(s) H2SO4(s)=PbSO4(s) 2Hg(l).
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