Use of Pitzer's Equations to Determine the Media Effect on the Formation of Lead Chloro Complexes
Digital Object Identifier (DOI)
The spectrophotometric measurements of chloro complexes of lead in aqueous HCl, NaCl, MgCl2 and CaCl2 solutions at 25°C have been analyzed using Pitzer's specific interaction equations. Parameters for activity coefficients of the complexes PbCl+, PbCl20 and PbCl3− have been determined for the various media. Values of K1= 30.0 ± 0.6">K1= 30.0 ± 0.6 , K2= 106.7 ± 2.1">K2= 106.7 ± 2.1 and K3= 73.0 ± 1.5">K3= 73.0 ± 1.5 were obtained for the cumulative formation constants. [Pb2++ nCl−→ PbCln2−n)">Pb2++ nCl−→ PbCln2−n) ]. These values are in reasonable agreement with literature data. The Pitzer parameters for the PbCl ion pairs in various media were used to calculate the speciation of Pb2+ in an artificial seawater solution.
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Citation / Publisher Attribution
Geochimica et Cosmochimica Acta, v. 48, issue 5, p. 1145-1150
Scholar Commons Citation
Millero, Frank J. and Byrne, Robert H., "Use of Pitzer's Equations to Determine the Media Effect on the Formation of Lead Chloro Complexes" (1984). Marine Science Faculty Publications. 1671.