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Tardigrade
Question
Chemistry
Brown ring test is used for detection of which radical ?
Q. Brown ring test is used for detection of which radical ?
2125
254
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MHT CET 2016
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A
Ferrous
B
Nitrite
C
Nitrate
D
Ferric
Solution:
Brown ring test is used for the detection of nitrate radical.
2
N
a
N
O
3
+
2
H
2
S
O
4
⟶
2
N
a
H
S
O
4
+
2
H
N
O
3
2
H
N
O
3
+
6
F
e
S
O
4
+
3
H
2
S
O
4
⟶
3
F
e
2
(
S
O
4
)
3
+
2
NO
+
4
H
2
O
[
F
e
(
H
2
O
)
6
]
S
O
4
+
NO
⟶
(Brown ring)
[
F
e
(
H
2
O
)
5
NO
]
2
+
S
O
4
2
−
+
H
2
O