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Question
Chemistry
. The Prussian blue colour obtained during the test of nitrogen by Lassaigne's test is due to the formation of:
Q. . The Prussian blue colour obtained during the test of nitrogen by Lassaigne's test is due to the formation of:
105
171
Organic Chemistry – Some Basic Principles and Techniques
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A
F
e
4
[
F
e
(
CN
)
6
]
3
67%
B
F
e
2
[
F
e
(
CN
)
6
]
6%
C
F
e
3
[
F
e
(
CN
)
6
]
4
15%
D
N
a
4
[
F
e
(
CN
)
6
]
12%
Solution:
F
e
3
+
+
[
F
e
(
CN
)
6
]
4
−
→
F
e
4
[
F
e
(
CN
)
6
]
3
Prussian blue (Ferri-ferrocyanide)