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Iron(III) nitrate, or ferric nitrate, is the name used for a series of inorganic compounds with the formula Fe(NO 3) 3. (H 2 O) n. Most common is the nonahydrate Fe(NO 3) 3. (H 2 O) 9. The hydrates are all pale colored, water-soluble paramagnetic salts.
When Fe 2 O 3 ·H 2 O is heated, it loses its water of hydration. Further heating at 1670 K converts Fe 2 O 3 to black Fe 3 O 4 (Fe II Fe III 2 O 4), which is known as the mineral magnetite. Fe(O)OH is soluble in acids, giving [Fe(H 2 O) 6] 3+. In concentrated aqueous alkali, Fe 2 O 3 gives [Fe(OH) 6] 3−. [12]
Iron(II) nitrate can be produced in multiple ways, such as the reaction of iron metal with cold dilute nitric acid: . 3 Fe + 8 HNO 3 + 12 H 2 O → 3 Fe(NO 3) 2 (H 2 O) 6 + 2 NO. If this reaction is conducted below -10 °C, nonahydrate is produced.
In the NO − 3 anion, the oxidation state of the central nitrogen atom is V (+5). This corresponds to the highest possible oxidation number of nitrogen. Nitrate is a potentially powerful oxidizer as evidenced by its explosive behaviour at high temperature when it is detonated in ammonium nitrate (NH 4 NO 3), or black powder, ignited by the shock wave of a primary explosive.
2 FeCl 3 + Fe → 3 FeCl 2. A traditional synthesis of anhydrous ferrous chloride is the reduction of FeCl 3 with chlorobenzene: [25] 2 FeCl 3 + C 6 H 5 Cl → 2 FeCl 2 + C 6 H 4 Cl 2 + HCl. iron(III) chloride releases chlorine gas when heated above 160 °C, generating ferrous chloride: [16] 2FeCl 3 → 2FeCl 2 + Cl 2
Iron(II,III) oxide, or black iron oxide, is the chemical compound with formula Fe 3 O 4.It occurs in nature as the mineral magnetite.It is one of a number of iron oxides, the others being iron(II) oxide (FeO), which is rare, and iron(III) oxide (Fe 2 O 3) which also occurs naturally as the mineral hematite.
3 + 3 NaOH → Fe(OH) 3 + 3 NaNO 3. In fact, when dissolved in water, pure FeCl 3 will hydrolyze to some extent, yielding the oxyhydroxide and making the solution acidic: [12] FeCl 3 + 2 H 2 O ↔ FeOOH + 3 HCl. Therefore, the compound can also be obtained by the decomposition of acidic solutions of iron(III) chloride held near the boiling ...
The structural motif is similar to that seen in ReO 3. Although the solid is nonvolatile, it evaporates at high temperatures, the gas at 987 °C consists of FeF 3, a planar molecule of D 3h symmetry with three equal Fe-F bonds, each of length 176.3 pm. [5] At very high temperatures, it decomposes to give FeF 2 and F 2. [4]