When iron (Fe) is exposed to moist atmosphere for a long time, rust is formed which is a layer of a brown flaky substance. What is the chemical composition of this iron rust?
In the process of rusting, iron reacts with oxygen and moisture that are present in the atmosphere to form hydrated iron oxide as per the following reaction: 2Fe+32O2+nH2O→Fe2O3.nH2O
The metal Iron (Fe) when exposed to moist atmosphere forms hydrated Iron oxide as per the following reaction. This process is known as rusting which does not take place in the absence of ‘Y’. Identify ‘Y’ in the reaction.Fe+O2+Y→Fe2O3.nH2O