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Chemistry
The formula of compound which gives violet colour in Lassaignes test for sulphur with sodium nitroprusside is
Q. The formula of compound which gives violet colour in Lassaignes test for sulphur with sodium nitroprusside is
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206
CMC Medical
CMC Medical 2008
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A
N
a
4
[
F
e
(
CN
)
6
S
]
B
N
a
4
[
F
e
(
CN
)
5
NCS
]
C
N
a
4
[
F
e
(
CN
)
5
NOS
]
D
N
a
2
[
F
e
(
CN
)
5
NOS
]
Solution:
Sodium thionitroprusside,
N
a
4
[
F
e
(
CN
)
5
NOS
]
gives violet colour in Lassagines test for sulphur with sodium nitroprusside.
sodium
extract
N
a
2
S
+
sodium
nitroprusside
N
a
2
[
F
e
(
CN
)
5
NO
]
purple
(violet)
colour
N
a
4
[
F
e
(
CN
)
5
NOS
]