Química Nova (Jan 2010)

Sulfetos: por que nem todos são insolúveis? Sulfides: why are not all insoluble?

  • Cláudia Rocha Martins,
  • Luciana Almeida Silva,
  • Jailson Bittencourt de Andrade

DOI
https://doi.org/10.1590/s0100-40422010001000044
Journal volume & issue
Vol. 33, no. 10
pp. 2283 – 2286

Abstract

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The solubility of sulfides is discussed in this article based on the factors that can influence this property, such as predominant type of chemical bonds and structures formed in many compounds. For soluble sulfides, considerations are made on the thermodynamic parameters and the acid-base equilibrium, since the sulfide anion is extensively hydrolyzed in aqueous solutions. On the other hand, for the insoluble sulfides, the discussion concerned the influence of structural factors that will be determinant for the low solubility.

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