Abstract

On the basis of potentiometric measurements, the solubility product of PtZn 2 in mercury was found to be 1×10 −14 M 3 at 298 K. The stoichiometry of this compound was also confirmed in voltammetric experiments using the hanging mercury drop (HMDE) and carbon paste electrodes Analysis of one-cycle chronopotentiometric results, based on precipitation of PtZn 2 in saturated Pt amalgam and electroreduced Zn, enabled the solubility of platinum in mercury to be estimated as (5±1)×10 −4 at. % or 3×10 −4 M at 298 K.

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