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Byju's Answer
Standard XII
Chemistry
Colours in Coordination Compounds
If true enter...
Question
If true enter 1, else enter 0.
F
e
C
l
3
gives blood red colour of formula
[
F
e
(
C
N
S
)
(
H
2
O
)
y
]
2
+
with KCNS. Here y = 5.
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Solution
F
e
C
l
3
gives blood red colour of formula
[
F
e
(
C
N
S
)
(
H
2
O
)
y
]
2
+
with KCNS. Here y = 5.
F
e
C
l
3
+
K
C
N
S
+
5
H
2
O
→
[
F
e
(
C
N
S
)
(
H
2
O
)
5
]
2
+
(
b
l
o
o
d
r
e
d
)
+
K
C
l
+
2
C
l
−
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0
Similar questions
Q.
F
e
C
l
3
solution gives blood red colour with
N
H
4
S
C
N
. If
H
2
S
gas is passed and filtered, then filtrate does not give red colour with
N
H
4
S
C
N
.
If true enter 1, else enter 0.
Q.
N
H
4
S
C
N
gives red colour with
F
e
3
+
Due to the formation of
[
F
e
(
S
C
N
)
]
2
+
.
If the given statement is true enter 1 else 0.
Q.
KCN forms soluble complex with silver.
If true enter 1, else enter 0.
Q.
(A) (yellow coloured solution) changes to light green coloured solution (B) on passing
H
2
S
gas. (A) and (B) both give white precipitate with
B
a
C
l
2
solution, insoluble in conc.
H
C
l
. A gives blue coloured ppt (C) with
K
4
[
F
e
(
C
N
)
6
]
, (B) does not. Here,
(A) :
F
e
C
l
3
(B) :
F
e
C
l
2
(C) :
F
e
4
[
F
e
(
C
N
6
)
]
3
If true enter 1, else enter 0.
Q.
If true enter 1, else enter 0.
Aqueous neutral solution of
F
e
C
l
3
reacts and acetate to form a reddish brown colour compound
[
F
e
3
(
O
H
)
2
(
C
H
3
C
O
O
)
x
]
+
, where x is 6.
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Standard XII Chemistry
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