ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The total concentration of dissolved mercury in equilibrium with solid HgS and in the presence of excess sulfide (present in the form of H2S, HS- and S2- has been determined radiochemically and gravimetrically. The difficult problem of the clean separation of the precipitated HgS from the solution could be solved by very slow filtration of large quantities of the suspension through a small porous plate under constant pressure. The solubility at a constant concentration of excess sulfide (=0,019 molar) as a function of pH is demonstrated in figure 1. The solubility is due to the complex Hg(SH)2 below pH 5, the complex HS-Hg-S- between pH 6 and 8, and the complex HgS22- above pH 9. The solubility produce of black HgS, the stability constants of the complexes, and the two acidity constants of Hg(SH)2 are given in the last section of the paper.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19630460719
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