Question

Explain the reactions of iron with air, steam, chlorine and acids.​

Answer 1

1. when an iron is exposed to moist air, it reacts with oxygen to form rust (Fe2O3) .
2. Iron reacts with steam to form hydrogen gas and the oxide (Fe3O4).
3. If you pass chlorine gas over hot iron, the iron burns to form iron(III) chloride. ... Any trace of water present in the apparatus, or in the chlorine, reacts with this to give reddish-brown colours. The iron has been oxidised from an oxidation state of zero to +3
4. Iron metal dissolves readily in dilute sulphuric acid in the absence of oxygen to form solutions containing the aquated Fe(II) ion together with hydrogen gas, H2. In practice, the Fe(II) is present as the complex ion [Fe(OH2)6]2+. If oxygen is present, some of the Fe(II) oxidizes to Fe(III).

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