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Question
Chemistry
If Cu2+ ions is treated with excess of KCN, the complex formed is
Q. If
C
u
2
+
ions is treated with excess of
K
CN
, the complex formed is
6112
268
UP CPMT
UP CPMT 2015
The d-and f-Block Elements
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A
K
2
[
C
u
(
CN
)
4
]
B
K
3
[
C
u
(
CN
)
4
]
C
K
4
[
C
u
(
CN
)
6
]
D
All of these
Solution:
C
u
2
+
is reduced to
C
u
+
which forms complex
K
3
[
C
u
(
CN
)
4
]
2
C
u
S
O
4
+
10
K
CN
→
2
K
3
[
C
u
(
CN
)
4
]
+
2
K
2
S
O
4
+
(
CN
)
2