6 HCl (aq) + NaClO3 (aq) → 3 H2O (l) + 3 Cl2 (g) + NaCl (aq)
This is an oxidation-reduction (redox) reaction:
5 Cl-I - 5 e- → 5 Cl0 (oxidation)
ClV + 5 e- → Cl0 (reduction)
HCl is a reducing agent, NaClO3 is an oxidizing agent (synproportionation (comproportionation)).
This is a gas evolution reaction, Cl2 is the formed gas.
- 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.]
- NaClO3 – Sodium chlorate
- H2O – Water, oxidane
- NaCl – Sodium chloride