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Byju's Answer
Standard X
Chemistry
Reaction of Metals with Acid
What happens ...
Question
What happens when water vapour is passed over a red hot iron?
A
No reaction
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B
Oxygen and
F
e
(
O
H
)
2
are produced
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C
Hydrogen and
F
e
2
O
3
are produced
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D
Hydrogen and
F
e
3
O
4
are produced
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Solution
The correct option is
D
Hydrogen and
F
e
3
O
4
are produced
The reaction takes place as
3
F
e
+
4
H
2
O
→
F
e
3
O
4
+
4
H
2
so, on passing water vapour over hot red iron we get hydrogen and
F
e
3
O
4
.
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