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Standard X
Chemistry
Corrosion
A hydrated ox...
Question
A hydrated oxide generally termed as rust is:
A
S
O
2
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B
O
2
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C
N
a
2
O
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D
F
e
2
O
3
.
x
H
2
O
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Solution
The correct option is
A
F
e
2
O
3
.
x
H
2
O
A hydrated oxide generally termed as rust is
F
e
2
O
3
.
x
H
2
O
formed from the equation:
4
F
e
+
3
O
2
→
2
F
e
2
O
3
+
x
H
2
O
→
F
e
2
O
3
.
x
H
2
O
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Similar questions
Q.
Rust is hydrated iron (III) oxide,
F
e
2
O
3
.
x
H
2
O
. (reddish brown powder). How is it obtained?
Q.
The metal iron (Fe) when exposed to moist atmosphere forms hydrated iron oxide as per the following reaction -
F
e
+
O
2
+
Y
→
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.
Q.
Balance the following reactions by oxidation number method :
F
e
S
2
+
O
2
→
F
e
2
O
3
+
S
O
2
Q.
'
n
' factor for
S
O
2
in
F
e
S
2
+
O
2
⟶
F
e
2
O
3
+
S
O
2
, is
:
Q.
Balance the following equation.
F
e
S
2
+
O
2
→
F
e
2
O
3
+
S
O
2
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