Fe + 8 HCl → FeCl8 + 4 H2
This is an oxidation-reduction (redox) reaction:
8 HI + 8 e- → 8 H0 (reduction)
Fe0 - 8 e- → FeVIII (oxidation)
HCl is an oxidizing agent, Fe is a reducing agent.
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , Hydrochloric acid gas , HCl
- 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.]