10 HNO3 + Sb2S3 → 5 H2O + 3 S + 10 NO2 + Sb2O5

This is an oxidation-reduction (redox) reaction:

3 S-II - 6 e- → 3 S0 (oxidation)

10 NV + 10 e- → 10 NIV (reduction)

2 SbIII - 4 e- → 2 SbV (oxidation)

Sb2S3 is a reducing agent, HNO3 is an oxidizing agent, Sb2S3 is a reducing agent.

Reactants:

  • HNO3 – Nitric acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Aqua fortis source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02, Spirit of niter source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Eau forte source: wikipedia, accessed: 2019-09-27
    • Appearance: Colorless, yellow or red fuming liquid source: wikipedia, accessed: 2019-09-27; Colourless-to-yellow liquid with pungent odour source: ICSC, accessed: 2019-09-04; Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.] source: NIOSH NPG, accessed: 2019-09-02
  • Sb2S3 – Diantimony trisulfide antimony(III) sulfide source: wikipedia, accessed: 2019-09-27
    • Other names: Antimony trisulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Antimony sulfide source: wikipedia, accessed: 2019-09-27, Antimonous sufide source: wikipedia, accessed: 2019-09-27
    • Appearance: Grey / black orthorhombic crystal (stibnite) source: wikipedia, accessed: 2019-09-27

Products:

  • 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
  • S
    • Names: Sulfur source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, S source: wikidata, accessed: 2019-09-07, Sulphur source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04
    • Appearance: Yellow solid in various forms source: ICSC, accessed: 2019-09-04
  • NO2 – Nitrogen dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Nitrogen(IV) oxide source: wikipedia, accessed: 2019-09-27, Deutoxide of nitrogen source: wikipedia, accessed: 2019-09-27, Nitrogen peroxide source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Brown gas source: wikipedia, accessed: 2019-09-27; Reddish-brown gas or brown or yellow liquid with pungent odour source: ICSC, accessed: 2019-09-04; Yellowish-brown liquid or reddish-brown gas (above 70°F) with a pungent, acrid odor. [Note: In solid form (below 15°F) it is found structurally as N2O4.] source: NIOSH NPG, accessed: 2019-09-02
  • Sb2O5 – (dioxo-λ5-stibanyl)oxy-dioxo-λ5-stibane source: wikipedia, accessed: 2019-09-27
    • Other names: Antimony pentoxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Antimony(V) oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: Yellow, powdery solid source: wikipedia, accessed: 2019-09-27