3 Cu2S + 8 HNO3 6 CuNO3 + 3 S + 2 NO + 4 H2O

This is an oxidation-reduction (redox) reaction:

3 S-II - 6 e- 3 S0 (oxidation)

2 NV + 6 e- 2 NII (reduction)

Cu2S is a reducing agent, HNO3 is an oxidizing agent.

Reactants:

  • Cu2SCopper(I) Sulphide source: wikipedia, accessed on: 2019-09-27
    • Other names: Copper(I) sulfide source: wikipedia, accessed on: 2019-09-27, Cuprous sulfide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Chalcocite source: wikipedia, accessed on: 2019-09-27
  • HNO3Nitric acid source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02
    • Other names: Aqua fortis source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02, Spirit of niter source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Eau forte source: wikipedia, accessed on: 2019-09-27
    • Appearance: Colorless, yellow or red fuming liquid source: wikipedia, accessed on: 2019-09-27; Colourless-to-yellow liquid with pungent odour source: ICSC, accessed on: 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 on: 2019-09-02

Products:

  • CuNO3
  • S
    • Names: Sulfur source: wikidata, accessed on: 2019-09-07source: ICSC, accessed on: 2019-09-04, S source: wikidata, accessed on: 2019-09-07, Sulphur source: wikidata, accessed on: 2019-09-07source: ICSC, accessed on: 2019-09-04
    • Appearance: Yellow solid in various forms source: ICSC, accessed on: 2019-09-04
  • NONitrogen monoxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02, Oxidonitrogen(•) (additive) source: wikipedia, accessed on: 2019-09-27
    • Other names: Nitric oxide source: wikipedia, accessed on: 2019-09-27source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02source: wikidata, accessed on: 2019-09-02, Nitrogen(II) oxide source: wikipedia, accessed on: 2019-09-27, Nitric oxide (radical) source: wikidata, accessed on: 2019-09-02
    • Appearance: Colourless gas source: wikipedia, accessed on: 2019-09-27; Colourless compressed gas source: ICSC, accessed on: 2019-09-04; Colorless gas. [Note: Shipped as a nonliquefied compressed gas.] source: NIOSH NPG, accessed on: 2019-09-02
  • H2OWater, oxidane source: wikipedia, accessed on: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed on: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed on: 2019-09-27, Hydrogen oxide source: wikipedia, accessed on: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed on: 2019-09-27