Spectral Properties and Redox Potentials of Silver Atoms Complexed by Chloride Ions in Aqueous Solution
The Journal of Physical Chemistry B2000Vol. 104(26), pp. 6233–6239
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Abstract
Pulse radiolysis is used to determine the absorption spectra of the transient species formed during the decay of the hydrated electron in an aqueous solution containing AgCl43-. The mechanisms of AgCl43- reduction by solvated electrons and hydroxyalkyl radicals of 2-propanol are discussed. The redox potential of the couples AgCl43-/Ag0Cl44- and AgCl43-/Ag0 + 4Cl- is evaluated. It is shown that the redox potential of the solvated silver atom couple is lowered by the presence of Cl- ligands. The value of the E°(AgCl43-/Ag0Cl44-) is estimated to be around −2.3 VNHE.
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