4 HCl + NaNO3 + 3 FeCl2 → 2 H2O + NaCl + NO + 3 FeCl3
This is an oxidation-reduction (redox) reaction:
NV + 3 e- → NII (reduction)
3 FeII - 3 e- → 3 FeIII (oxidation)
NaNO3 is an oxidizing agent, FeCl2 is a reducing 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.]
- NaNO3 – Sodium nitrate
- FeCl2 – Iron(II) chloride , Iron dichloride
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