5 KOH + 3 HNO3 + 2 Al → 4 H2O + 3 KNO2 + 2 KAlO2
This is an acid-base reaction (neutralization): KOH is a base, HNO3 is an acid.
This is an oxidation-reduction (redox) reaction:
2 Al0 - 6 e- → 2 AlIII (oxidation)
3 NV + 6 e- → 3 NIII (reduction)
Al is a reducing agent, HNO3 is an oxidizing agent.
Reactants:
- KOH – Potassium hydroxide
- 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.]
- Al
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