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Standard X
Chemistry
Question
N
a
2
S
+
N
a
2
[
F
e
(
C
N
)
5
N
O
]
⟶
X
(
p
u
r
p
l
e
c
o
l
o
r
)
What is the formula of X?
[
F
e
(
H
2
O
)
5
N
O
]
S
O
4
N
a
4
[
F
e
(
C
N
)
5
(
N
O
S
)
]
F
e
4
[
F
e
(
C
N
)
6
]
[
F
e
(
H
2
O
)
2
N
O
]
S
O
4
A
[
F
e
(
H
2
O
)
5
N
O
]
S
O
4
B
N
a
4
[
F
e
(
C
N
)
5
(
N
O
S
)
]
C
F
e
4
[
F
e
(
C
N
)
6
]
D
[
F
e
(
H
2
O
)
2
N
O
]
S
O
4
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Solution
Verified by Toppr
With sodium nitroprusside solution, ionic sulphide gives a purple colour in alkaline medium.
N
a
2
S
+
N
a
2
[
F
e
(
C
N
)
5
N
O
]
⟶
N
a
4
[
F
e
(
C
N
)
5
N
O
S
]
P
u
r
p
l
e
c
o
l
o
u
r
Here X is
N
a
4
[
F
e
(
C
N
)
5
(
N
O
S
)
]
.
Option (D) is correct.
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[
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Q2
The following reaction happens in which test ?
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[
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e
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⟶
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Q4
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S
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a
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[
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e
(
C
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5
N
O
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X
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p
u
r
p
l
e
c
o
l
o
r
)
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Q5
The
O
.
S
.
of
F
e
in
N
a
2
[
F
e
(
C
N
)
5
N
O
]
and
N
a
4
[
F
e
(
C
N
)
5
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S
]
is:
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