Pb (s) + H2S (g) PbS (s) + H2 (g)

This is an oxidation-reduction (redox) reaction:

Pb0 - 2 e- PbII (oxidation)

2 HI + 2 e- 2 H0 (reduction)

Pb is a reducing agent, H2S is an oxidizing agent.

Reactants:

  • Pb
    • Names: Lead source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Lead metal source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Plumbum source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Bluish-white or silvery-grey solid in various forms. turns tarnished on exposure to air source: ICSC, accessed: 2019-09-04; A heavy, ductile, soft, gray solid. source: NIOSH NPG, accessed: 2019-09-02
  • H2SHydrogen sulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Other names: D source: wikipedia, accessed: 2019-09-27, Ihydrogen monosulfide|Dihydrogen sulfide|Sewer gas|Sulfane|Sulfurated hydrogen|Sulfureted hydrogen|Sulfuretted hydrogen|Sulfur hydride|Hydrosulfuric acid|Hydrothionic acid|Thiohydroxic acid|Sulfhydric acid}} source: wikipedia, accessed: 2019-09-27, Hydrosulfuric acid source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Colorless gas source: wikipedia, accessed: 2019-09-27; Colourless compressed liquefied gas with characteristic odour of rotten eggs source: ICSC, accessed: 2019-09-04; Colorless gas with a strong odor of rotten eggs. [Note: Sense of smell becomes rapidly fatigued & can NOT be relied upon to warn of the continuous presence of H2S. Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02

Products:

  • PbS
    • Names: Lead(II) sulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Plumbous sulfide source: wikipedia, accessed: 2019-09-27, Galena source: wikipedia, accessed: 2019-09-27
    • Appearance: Black source: wikipedia, accessed: 2019-09-27
  • H2
    • Names: Dihydrogen source: wikidata, accessed: 2019-09-07, Hydrogen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, H2 source: wikidata, accessed: 2019-09-07
    • Appearance: Odourless colourless compressed gas source: ICSC, accessed: 2019-09-04