Equilibrium potential of ion transfer reactions

we consider a transfer reaction of metal ions across the interface of metal electrodes as in Eqn. 6-16  

The electromotive force of this cell gives the equilibrium potential Em2-/m for the transfer reaction of metal ions as shown in Eqn. 6-18  

TABLE 6-2. Hie standard equilibrium potentials for transfer reactions of metal ions at metal electrodes at 25 C. [Handbooks of electrocfaemistiy.] 

Further, we consider an ion transfer reaction at a multiphase silver-silver chloride electrode in an aqueous chloride solution as shown in Fig. 6-7. The ion transfer reactions at the AgCl/Cl u, interface tmd at the Ag/AgCl interface are, respectively, given in Eqn. 6-19  

Fig 6-7. EUectrochemical cell composed of a silver-sOver chloride multiphase electrode of ion transfer and a normal hydrogen electrode Ag = silver metal AgCl = silver chloride. 

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In electrochemistry, the chemical potential of hydrated ions has been determined from the equilibrium potential of ion transfer reactions referred to the normal hydrogen electrode. For the reaction of metal ion transfer (metal dissolution-deposition reaction) of Eqns. 6-16 and 6-17, the standard equilibriiun potential Sive in terms of the standard chemical potential, li, by Eqn. 

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