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Question
Chemistry
Which complex among the following gives a white precipitate on treatment with an aqueous solution of barium chloride?
Q. Which complex among the following gives a white precipitate on treatment with an aqueous solution of barium chloride?
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A
[
Pt
(
N
H
3
)
4
B
r
2
]
C
l
2
B
[
C
o
(
N
H
3
)
5
S
O
4
]
N
O
2
C
[
C
o
(
N
H
3
)
5
N
O
2
]
S
O
4
D
[
Pt
(
N
H
3
)
4
C
l
2
]
B
r
2
Solution:
Among the given coordination compounds,
[
C
o
(
N
H
3
)
5
N
O
2
]
S
O
4
gives a white precipitate on treatment with an aqueous solution of barium chloride. This can be explained by the following reaction.
[
C
o
(
N
H
3
)
5
N
O
2
]
S
O
4
+
B
a
C
l
2
(
a
q
)
⟶
[
C
o
(
N
H
3
)
5
N
O
2
]
C
l
2
+
White ppt.
B
a
S
O
4
(
s
)
The other given compounds do not give white ppt. due to absence of
S
O
4
2
−
ions.