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Question

In the following reaction,
3Fe + 4H2O Fe3O4 + dH2.
Find the value of d.


A
4
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B

3

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C

4

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D

1

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Solution

The correct option is C

4


3Fe + 4H2O Fe3O4 + dH2

A balanced chemical equation has equal number of atoms of each element on both sides.

Name of the atomNo. of atom in the reactantNo. of atoms in productIron33Hydrogen88Oxygen44

Thus, the value of d on reactant side will be 4 to have the same number of atoms ( 8 atoms of hydrogen) on reactant and product side


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