3 Cd (s) + 8 HNO3 (aq) → 3 Cd(NO3)2 (aq) + 2 NO (g) + 4 H2O (l)
This is an oxidation-reduction (redox) reaction:
3 Cd0 - 6 e- → 3 CdII (oxidation)
2 NV + 6 e- → 2 NII (reduction)
Cd is a reducing agent, HNO3 is an oxidizing agent.
Reactants:
- Cd
- HNO3 – Nitric acid
- Other names: Aqua fortis , Spirit of niter , Eau forte
- Appearance: Colorless, yellow or red fuming liquid ; Colourless-to-yellow liquid with pungent odour ; 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.]
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