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?

Iron oxide

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Hydrated Iron oxide

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Iron

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Moisture and Oxygen

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Solution

The correct option is B Hydrated Iron oxide
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:
$2 F e + \frac{3}{2} O_{2} + n H_{2} O \to F e_{2} O_{3} . n H_{2} O$

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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

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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?

The correct option is B Hydrated Iron oxideIn 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 correct option is B Hydrated Iron oxide
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:
$2 F e + \frac{3}{2} O_{2} + n H_{2} O \to F e_{2} O_{3} . n H_{2} O$