HClO3 + 3 HNO2 → 3 HNO3 + HCl

This is an oxidation-reduction (redox) reaction:

ClV + 6 e- → Cl-I (reduction)

3 NIII - 6 e- → 3 NV (oxidation)

HClO3 is an oxidizing agent, HNO2 is a reducing agent.

Reactants:

  • HClO3
    • Names: Chloric acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Chloric(V) acid source: wikipedia, accessed: 2019-09-27, HClO3 source: wikidata, accessed: 2019-09-02
    • Appearance: Colourless solution source: wikipedia, accessed: 2019-09-27
  • HNO2 – Nitrous acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Hydroxidooxidonitrogen source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: HNO2 source: wikidata, accessed: 2019-09-02, [NO(OH)] source: wikidata, accessed: 2019-09-02, Nitrosyl hydroxide source: wikidata, accessed: 2019-09-02, Dioxonitric acid source: wikidata, accessed: 2019-09-02
    • Appearance: Pale blue solution source: wikipedia, accessed: 2019-09-27

Products:

  • 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
  • HCl – Chlorane source: wikipedia, accessed: 2019-09-27, Hydrogen chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Hydrochloric acid source: wikipedia, accessed: 2019-09-27source: NIOSH NPG, accessed: 2019-09-02, M source: wikipedia, accessed: 2019-09-27, Uriatic acid source: wikipedia, accessed: 2019-09-27
    • Appearance: Colorless, transparent liquid, fumes in air if concentrated source: wikipedia, accessed: 2019-09-27; Colorless gas source: wikipedia, accessed: 2019-09-27; Colourless compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02