Au (s) + NaNO3 (aq) + 4 HCl (aq) → AuCl3 (aq) + NO (g) + 2 H2O (l) + NaCl (aq)
This is an oxidation-reduction (redox) reaction:
Au0 - 3 e- → AuIII (oxidation)
NV + 3 e- → NII (reduction)
Au is a reducing agent, NaNO3 is an oxidizing agent.
Reactants:
- Au
- NaNO3 – Sodium nitrate
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
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