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Byju's Answer
Standard XII
Chemistry
Roasting
H_2O_2 is an...
Question
H
2
O
2
is an oxidant when it reacts with:
A
acidified
K
4
[
F
e
(
C
N
)
6
]
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B
alkaline
K
3
[
F
e
(
C
N
)
6
]
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C
C
l
2
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D
acidified
K
M
n
O
4
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Solution
The correct option is
D
acidified
K
4
[
F
e
(
C
N
)
6
]
C
l
2
and
K
M
n
O
4
are stronger oxidising agents than
H
2
O
2
.
Also,
K
3
[
F
e
(
C
N
)
6
]
has iron in its highest oxidation state +3 which is not possible to oxidise further.
Therefore
H
2
O
2
acts as an oxidising agent only for
K
4
[
F
e
(
C
N
)
6
]
.
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Q.
In the reaction of
H
2
O
2
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K
4
[
F
e
(
C
N
)
6
]
, the oxidation state of iron changes to:
Q.
Black
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What is the oxidation state of Fe in the product formed when acidified potassium ferrocyanide
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