Cd (s) + 2 HNO3 (aq) → Cd(NO3)2 (aq) + H2 (g)

This is an oxidation-reduction (redox) reaction:

Cd0 - 2 e- → CdII (oxidation)

2 HI + 2 e- → 2 H0 (reduction)

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

Reactants:

  • Cd
    • Names: Cadmium source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, Cd source: wikidata, accessed: 2019-09-07, Element 48 source: wikidata, accessed: 2019-09-07, 48 source: wikidata, accessed: 2019-09-07
    • Appearance: Soft blue-white metal lumps or grey powder. malleable. turns brittle on exposure to 80°c. tarnishes on exposure to moist air source: ICSC, accessed: 2019-09-04
  • 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

Products:

  • Cd(NO3)2 – Cadmium(II) nitrate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Cadmium nitrate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Nitric acid source: wikipedia, accessed: 2019-09-27, Cadmium salt source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystals, hygroscopic 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