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Byju's Answer
Standard XII
Chemistry
Osmotic Pressure
Will CaF2 b...
Question
Will
C
a
F
2
be precipitated?
A
Yes
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B
No
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C
Data insufficient
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D
None of these
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Solution
The correct option is
B
No
[
C
a
+
2
]
=
[
F
−
]
=
10
−
4
2
=
5
×
10
−
5
The ionic product is
[
C
a
2
+
]
[
F
−
]
2
=
(
5
×
10
−
5
)
(
5
×
10
−
5
)
2
=
1.255
×
10
−
13
.
But
K
s
p
=
1.6
×
10
−
10
Since the value of the ionic product is less than the value of the solubility product, no precipitation will occur.
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Q.
Assertion :On mixing
500
m
L
of
10
−
6
M
C
a
2
+
ion and
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ion, the precipitate of
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will be obtained.
K
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p
(
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Reason: If
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