2 NH4Cl + K2Cr2O7 + 6 HCl → 2 CrCl3 + N2 + 2 KCl + 7 H2O
This is an oxidation-reduction (redox) reaction:
2 N-III - 6 e- → 2 N0 (oxidation)
2 CrVI + 6 e- → 2 CrIII (reduction)
NH4Cl is a reducing agent, K2Cr2O7 is an oxidizing agent.
Reactants:
- NH4Cl – Ammonium chloride
- K2Cr2O7 – Potassium dichromate(VI)
- 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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