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Chemistry
In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to
Q. In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to
1388
215
AFMC
AFMC 2012
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A
N
a
3
F
e
(
CN
)
6
B
N
a
3
[
F
e
(
CN
)
5
NOS
]
C
F
e
(
CNS
)
3
D
None of the above
Solution:
F
e
(
CNS
)
3
is red in colour and is formed when both
N
and
S
are present in organic compound.
form organic compound
N
a
2
S
+
Sodium nitroprusside
N
a
2
[
F
e
(
CN
)
5
NO
]
⟶
violet colour
[
N
a
3
F
e
(
CN
)
5
NOS
]