6 Ag2SO4 (s) + 2 AsH3 (aq) + 3 H2O (l) → 12 Ag (s) + As2O3 (s) + 6 H2SO4 (aq)

This is an oxidation-reduction (redox) reaction:

2 As-III - 12 e- → 2 AsIII (oxidation)

12 AgI + 12 e- → 12 Ag0 (reduction)

AsH3 is a reducing agent, Ag2SO4 is an oxidizing agent.

Reactants:

  • Ag2SO4 – Silver sulfate source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02
    • Other names: Disilver sulfate source: wikipedia, accessed: 2019-09-28, Silver(I) sulfate source: wikidata, accessed: 2019-09-02, Silver sulphate source: wikidata, accessed: 2019-09-02, Silver(I) sulphate source: wikidata, accessed: 2019-09-02
    • Appearance: Colorless crystals source: wikipedia, accessed: 2019-09-28
  • AsH3 – Arsenic trihydride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Arsane source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Trihydridoarsenic source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Arsine source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Arseniuretted hydrogen source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02, Arsenous hydride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Colourless gas source: wikipedia, accessed: 2019-09-27; Colourless compressed liquefied gas with characteristic odour source: ICSC, accessed: 2019-09-04; Colorless gas with a mild, garlic-like odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02
  • H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27

Products:

  • Ag
    • Names: Silver source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, Ag source: wikidata, accessed: 2019-09-07, Element 47 source: wikidata, accessed: 2019-09-07
    • Appearance: White metal. turns dark on exposure to ozone, hydrogen sulfide or sulfur source: ICSC, accessed: 2019-09-04
  • As2O3 – Diarsenic trioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Other names: Arsenic trioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Arsenic(III) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Arsenic sesquioxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White solid source: wikipedia, accessed: 2019-09-27; White lumps or crystalline powder source: ICSC, accessed: 2019-09-04
  • H2SO4 – Sulfuric acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-07source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Oil of vitriol source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Sulfuric acid, concentrated (> 51% and < 100%) source: ICSC, accessed: 2019-09-04, H2SO4 source: wikidata, accessed: 2019-09-07
    • Appearance: Clear, colorless liquid source: wikipedia, accessed: 2019-09-27; Odourless colourless oily hygroscopic liquid source: ICSC, accessed: 2019-09-04; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.] source: NIOSH NPG, accessed: 2019-09-02