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In complementary route, iron metal can be oxidized by hydrochloric acid followed by chlorination: [10] Fe + 2 HCl → FeCl 2 + H 2 FeCl 2 + 0.5 Cl 2 + 6 H 2 O → FeCl 3 (H 2 O) 6. A number of variables apply to these processes, including the oxidation of iron by ferric chloride and the hydration of intermediates. [10] Hydrates of iron(III ...
Iron(III) chloride is produced commercially by oxychlorination (and other methods). For example, dissolution of iron ores in hydrochloric acid gives a mixture of ferrous and ferric chlorides: [4] Fe 3 O 4 + 8 HCl → FeCl 2 + 2 FeCl 3 + 4 H 2 O. The iron(II) chloride is converted to the iron(III) derivative by treatment with oxygen and ...
Ferrous chloride is prepared by addition of iron powder to a solution of hydrochloric acid in methanol. This reaction gives the methanol solvate of the dichloride, which upon heating in a vacuum at about 160 °C converts to anhydrous FeCl 2. [4] The net reaction is shown: Fe + 2 HCl → FeCl 2 + H 2. FeBr 2 and FeI 2 can be prepared analogously.
The iron compounds produced on the largest scale in industry are iron(II) sulfate (FeSO 4 ·7H 2 O) and iron(III) chloride (FeCl 3). The former is one of the most readily available sources of iron(II), but is less stable to aerial oxidation than Mohr's salt ( (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O ).
This reaction can be used to remove potassium hexacyanidoferrate(II) from a solution. [citation needed] A famous reaction involves treatment with ferric salts, most commonly Iron(III) chloride, to give Prussian blue. In the reaction with Iron(III) chloride, producing Potassium chloride as a side-product:
Cl 2 + H 2 → 2 HCl. As the reaction is exothermic, the installation is called an HCl oven or HCl burner. The resulting hydrogen chloride gas is absorbed in deionized water, resulting in chemically pure hydrochloric acid. This reaction can give a very pure product, e.g. for use in the food industry. The reaction can also be triggered by blue ...
Metals in the middle of the reactivity series, such as iron, will react with acids such as sulfuric acid (but not water at normal temperatures) to give hydrogen and a metal salt, such as iron(II) sulfate: Fe (s) + H 2 SO 4 (l) → FeSO 4 (aq) + H 2 (g) There is some ambiguity at the borderlines between the groups.
4 HCl + O 2 → 2 Cl 2 + 2H 2 O The reaction takes place at about 400 to 450 °C in the presence of a variety of catalysts, including copper chloride (CuCl 2 ). Three companies developed commercial processes for producing chlorine based on the Deacon reaction: [ 1 ]