Solubility product of galena at 298°K: A possible explanation for apparent supersaturation in nature

Details Solubility product of galena at 298°K: A possible explanation for apparent supersaturation in nature Solubility product of galena at 298°K: A possible explanation for apparent supersaturation in nature

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48.1155u&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 48, Issue 6, pp.1155-1160

Computer Science

1

Scientific paper

The synthetic chelating agent ethylenediaminetetraacetic acid (EDTA) has been used to evaluate the stoichiometric solubility product of galena (PbS) at 298°K: This method circumvents the possible uncertainties in the stoichiometry and stability of lead sulfide complexes. At infinite dilution, Log K s 2 = -12.25 ±0.17, and at an ionic strength corresponding to seawater ( I = 0.7 M ), Log K s 2 = -11.73 ± 0.05. Using the value of K s 2 at infinite dilution, and the free energies of formation of HS - and Pb 2+ at 298°K (literature values), the free energy of formation of PbS at 298°K is computed to be -79.1 ± 0.8 KJ / mol (-18.9 Kcal / mol ). Galena is shown to be more than two orders of magnitude more soluble than indicated by calculations based on previous thermodynamic data.

Affiliated with

Also associated with

No associations

Rating

Solubility product of galena at 298°K: A possible explanation for apparent supersaturation in nature does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Solubility product of galena at 298°K: A possible explanation for apparent supersaturation in nature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solubility product of galena at 298°K: A possible explanation for apparent supersaturation in nature will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1854192