How polarity of thermogalvanic cell can be estimated by thermodynamic modeling without experiment?

01 January 2020 0 322 Report

Some metals have "hot end cathode" while some others have "cold cathode" in thermogalvanic cells-some metals flip from hot to cold cathode in matter of hours. Why? if Nernst equation is used, then the factor (ln (ai))T decides the polarity of the cell. Can the polarity for any given metal and electrolyte be derived from first principle inorganic chemistry and thermodynamics (i.e. temperature dependence of thermodynamic activity) ? if yes, How?

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