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Q.

In the following reaction :3Fe+4H2O⟶Fe3O4+4H2, if the atomic weight of iron is 56, then its equivalent weight will be:

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a

42

b

21

c

63

d

84

answer is B.

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Detailed Solution

3Fe+4H2O⟶Fe3+8/3O4+4H23Fe+4H2O⟶→Fe3O4+8H++8e− V.F. of Fe=83. EFe Atomic mass V.F.=568/3=21
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In the following reaction :3Fe+4H2O⟶Fe3O4+4H2, if the atomic weight of iron is 56, then its equivalent weight will be: