Abstract
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 ± 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+/H2, Cu2+/Cu, Cl−/Hg2Cl2,Hg, Fe3+/Fe2+, and Cl−/Cl2 to determine their respective reaction heats with satisfying results.
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