Or you want a quick look:
This is an acid-base reaction (neutralization): Fe3O4 is a base, HI is an acid.
This is an oxidation-reduction (redox) reaction:
2 I-I - 2 e- → 2 I (oxidation)
3 Fe8/3 + 2 e- → 3 FeII (reduction)
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HI is a reducing agent, Fe3O4 is an oxidizing agent.
Reactants:
- Fe3O4 – Iron(II) iron(III) oxide
- Other names: Iron(II,III) oxide , Ferrous ferric oxide , Ferroso ferric oxide
- Appearance: Solid black powder
- HI – Iodane
- Other names: Hydroiodic acid , Hydrogen iodide , Hydronium iodide
- Appearance: Colorless liquid ; Colorless gas ; Colourless compressed liquefied gas with pungent odour
Products:
- FeI2 – Iron(II) iodide
- Other names: Ferrous iodide
- Appearance: White to off-white powder
- I2
- Names: Iodine , Jod , Iode
- Appearance: Bluish black or dark purple crystals with pungent odour ; Violet solid with a sharp, characteristic odor.
- H2O – Water, oxidane
- Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide
- Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas
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