The metal iron Fe when exposed to moist atmosphere forms hydrated iron oxide as per the following reaction Fe - O 2- Y - F e 2 O 3- nH 2 OThis process is known as rusting which does not take place in the absence of - Y - Identify - Y - in the reaction- A- CO 2B- H 2 O moistureC- N 2D- F e 2 O 3

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Chemical Properties of Metals

The metal iro...

Question

The metal iron (Fe) when exposed to moist atmosphere forms hydrated iron oxide as per the following reaction -
$F e + O_{2} + Y \to F e_{2} O_{3} . n H_{2} O$

This process is known as rusting which does not take place in the absence of ‘Y’. Identify ‘Y’ in the reaction.

C O_{2}

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H_{2} O

(moisture)

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N_{2}

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F e_{2} O_{3}

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Solution

The correct option is B $H_{2} O$ (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:
$2 F e (s) + \frac{3}{2} O_{2} (g) + n H_{2} O (l) \to F e_{2} O_{3} . n H_{2} O (s)$

The moisture present in atmosphere refers to water vapour $(H_{2} O)$ .

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Similar questions

Q. Iron when exposed to moist air forms a reddish brown layer of iron oxide, which is known as rust.

Q. When iron (Fe, gram atomic mass=56 g) is exposed to the atmospheric oxygen, it results in the formation of rust (

{Fe}_{2} O_{3}

, gram molecular mass=160 g). If 1120 g of

{Fe}_{2} O_{3}

is formed, how many moles of

{Fe}_{2} O_{3}

is formed?

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?

Q. Iron (III) oxide can be reduced with

C O

to form metallic iron as described by unbalanced chemical reaction.

F e_{2} O_{3} + C O \to F e + C O_{2}

The number of moles of

C O

required to form one mole of

F e

from its oxide is:

Q. Assertion :Extraction of iron metal from iron oxide ore is carried out by heating with coke. Reason: The reaction:

F e_{2} O_{3} (s) \to F e (s) + 3 / 2 O_{2} (g)

is a spontaneous process.

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The metal iron (Fe) when exposed to moist atmosphere forms hydrated iron oxide as per the following reaction - Fe+O2+Y→Fe2O3.nH2O This process is known as rusting which does not take place in the absence of ‘Y’. Identify ‘Y’ in the reaction.

The metal iron (Fe) when exposed to moist atmosphere forms hydrated iron oxide as per the following reaction -
$F e + O_{2} + Y \to F e_{2} O_{3} . n H_{2} O$

This process is known as rusting which does not take place in the absence of ‘Y’. Identify ‘Y’ in the reaction.