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
The correct option is A
H2O (moisture)
In the process of rusting, the metal iron reacts with oxygen and moisture that is present in the atmosphere to form hydrated iron oxide as per the following reaction:
2Fe+32O2+nH2O→Fe2O3.nH2O
The moisture present in the atmosphere refers to water vapour (H2O).