2 KNO3 (aq) + 6 KI (aq) + 8 HCl (aq) → 3 I2 (s) + 2 NO (g) + 8 KCl (aq) + 4 H2O (l)
This is an oxidation-reduction (redox) reaction:
6 I-I - 6 e- → 6 I0 (oxidation)
2 NV + 6 e- → 2 NII (reduction)
KI is a reducing agent, KNO3 is an oxidizing agent.
This is a precipitation reaction: I2 is the formed precipitate.
This is a gas evolution reaction, NO is the formed gas.
Reactants:
- KNO3 – Potassium nitrate
- KI
- 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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