The Peltier heat and the standard electrode potential of ferro-ferricyanide couple at 298.15 K determined by electrochemical-calorimetry

An experiment was done on electrochemical-calorimetry to identify the Peltier heats of the ferro-ferricyanide reversible electrode reaction over the concentration range of 0.075-0.3 mol dm(-3) at 298.15 K. A new approach has been developed to obtain the standard potential of this electrode, which was identified as (+0.3580 +/- A 0.0030) volt at 298.15 K and compared with previously reported values. An equation derived from the approach is also applied to several standard couples, such as Fe(CN) (6) (-3) /Fe(CN) (6) (-4) , H+/H-2, Cu2+/Cu, Cl-/Hg2Cl2,Hg, Fe3+/Fe2+, and Cl-/Cl-2 to determine their respective reaction heats with satisfying results.