5 HCl + NaNO3 + Au → 2 H2O + NaCl + NO + HAuCl4
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:
- 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.]
- Other names: Hydrochloric acid
- NaNO3 – Sodium nitrate
- Au
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